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Air Quality Sensor Performance Evaluation Center

Sensor Results Summary Table

South Coast AQMD’s AQ-SPEC program evaluates air quality sensors in both field and controlled laboratory conditions. In field testing, sensors are compared against traditional federal reference/equivalent method instruments at an air monitoring station to gauge overall performance. In the AQ-SPEC laboratory, sensors undergo testing at specific conditions in an environment controlled chamber where different temperature, humidity, and pollutants can be introduced to thoroughly characterize sensor responses. To view details of individual sensors, please visit https://www.aqmd.gov/aq-spec/sensors and filter for manufacturer, pollutant types, or measurement methods from the Category dropdown to select for the sensors/pollutants of interest. 

The interactive table below summarizes performance evaluation results for all sensors tested by AQ-SPEC to date. The table offers searching, sorting, and filtering functions for users to select and compare sensors. Definitions for terminologies used in this summary table can be found in the Terms and Definitions section.

Make (Model) Est. Cost
(USD)		 Pollutant
Tested
(Sensor Type)		 Field R2 Field MAE
(PM: µg/m3
Gas: ppb)
 Lab R2
 Lab MAE
(PM: µg/m3
Gas: ppb)		 Report
Make (Model) Budget (USD) Pollutant/Type Min Field R2 Max Field MAE Min Lab R2 Max Lab MAE Report
Aeroqual
(S500-GSS)
 1650 tVOC (MOx) - - Lab
Aeroqual
(S500-PID)
 3120 tVOC (PID) 0.98
(low ramp)		 220 to 480
(low ramp)		 Lab
Aeroqual
(S500-PID)
 3120 tVOC (PID) 0.99
(high ramp)		 50 to 1170
(high ramp)		 Lab
SGS Galson
(SmartSense)
 1995 tVOC (PID) 0.97
(low ramp)		 330 to 450
(low ramp)		 Lab
SGS Galson
(SmartSense)
 1995 tVOC (PID) 0.99
(high ramp)		 20 to 1080
(high ramp)		 Lab
SGS Galson
(SmartSense)
 1995 CO (EC) 0.29 to 0.73 74.3 to 212.1 Field
SGS Galson
(SmartSense)
 1995 NO2 (EC) 0.02 to 0.29 86.9 to 441.6 Field
SGS Galson
(SmartSense)
 1995 O3 (EC) 0.59 to 0.71 11.5 to 16.2 Field
SGS Galson
(SmartSense)
 1995 PM1.0 0.86 to 0.90 2.0 to 2.7 Field
SGS Galson
(SmartSense)
 1995 PM2.5 0.86 to 0.88 2.6 to 3.3 Field
SGS Galson
(SmartSense)
 1995 PM10 0.57 to 0.60 9.9 to 15.4 Field
Fablab
(Smart Citizen
Kit v2.1)
Discontinued
 119 tVOC (MOx) 0.69 to 0.73
(low ramp)		 410 to 430
(low ramp)		 Lab
Fablab
(Smart Citizen
Kit v2.1)
Discontinued
 119 tVOC (MOx) -
(high ramp)		 -
(high ramp)		 Lab
PurpleAir
(PA-II-FLEX VOC)
 289 tVOC (MOx) Negative Correlation
(low ramp)		 -
(low ramp)
 Lab
PurpleAir
(PA-II-FLEX VOC)
 289 tVOC (MOx) 0.40-0.60
(high ramp)		 -
(high ramp)		 Lab
Sensirion
(SGP40)
 7 tVOC (MOx) 0.91
(low ramp)		 30 to 340
(low ramp)		 Lab
Sensirion
(SGP40)
 7 tVOC (MOx) 0.01
(high ramp)		 5000
(high ramp)		 Lab
SENSIT
(SPOD Ion XF-PID)
 4200 tVOC (PID) 0.99
(low ramp)		 150 to 260
(low ramp)		 Lab
SENSIT
(SPOD Ion XF-PID)
 4200 tVOC (PID) 0.99
(high ramp)		 800 to 2200
(high ramp)		 Lab
Aeroqual
(AQY-R)
 5000 PM2.5 0.66 to 0.81 2.9 to 5.1 0.99 3.0 to 13.3 Field
Lab
Aeroqual
(AQY v0.5)
Discontinued
 3000 PM2.5 0.84 to 0.87 - 0.99 28.8 to 36.0 Field
Lab
Aeroqual
(AQY v1.0)
Discontinued
 4000 PM2.5 0.76 to 0.81 4.2 to 5.3 0.99 5.4 to 15.1 Field
Lab
Aeroqual
(AQY v1.0)
Discontinued
 4000 PM10 0.56 to 0.68 35.4 to 38.8 - - Field
Aeroqual
(S500-PM)
1490 PM2.5 0.46 to 0.67 4.4 to 6.2 0.99 11.9 to 32.4 Field
Lab
Aeroqual
(S500-PM)
1490 PM10 0.15 to 0.24 13.5 to 18.0 - - Field
Lab
AethLabs
(microAeth)
Discontinued
 6500 BC 0.79 to 0.94 - - - Field
Airly
 750 PM1.0 0.79 to 0.89 4.2 to 5.3 - - Field
Airly
 750 PM2.5 0.83 to 0.89 4.5 to 5.0 - - Field
Airly
 750 PM10 0.34 to 0.37 19.3 to 19.7 - - Field
Air Quality Egg
(2018 Model)
Discontinued
 249 PM1.0 0.86 to 0.88 2.1 to 2.3 0.99 7.0 to 7.3 Field
Lab
Air Quality Egg
(2018 Model)
Discontinued
 249 PM2.5 0.84 to 0.85 4.4 to 5.3 0.99 6.1 to 6.6 Field
Lab
Air Quality Egg
(2018 Model)
Discontinued
 249 PM10 0.12 to 0.13 16.4 to 19.2 - - Field
Lab
Air Quality Egg
(Ver. 1)
Discontinued
 200 PM 0 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 PM2.5 0.79 to 0.85 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 PM10 0.31 to 0.40 - - - Field
Air Quality Egg
(2022 Model)
Discontinued
 671 PM1.0 0.84 to 0.89 2.9 to 3.9 - - Field
Lab
Air Quality Egg
(2022 Model)
Discontinued
 671 PM2.5 0.88 to 0.90 6.0 to 7.1 0.99 5.0 to 8.0 Field
Lab
Air Quality Egg
(2022 Model)
Discontinued
 671 PM10 0.29 to 0.52 18.5 to 20.8 - - Field
Lab
AirThinx
(IAQ)
905 PM1.0 0.68 to 0.70 2.4 to 2.5 - - Field
AirThinx
(IAQ)
905 PM2.5 0.54 to 0.57 4.8 to 5.0 - - Field
AirThinx
(IAQ)
905 PM10 0.03 to 0.05 19.7 to 19.8 - - Field
Airviz Inc.
(Speck)
Discontinued
 150 PM2.5 0.32 - - - Field
Alphasense
(OPC-N2)
Discontinued
 450 PM1.0 0.63 to 0.82 - 0.99 - Field
Lab
Alphasense
(OPC-N2)
Discontinued
 450 PM2.5 0.65 to 0.80 - 0.99 - Field
Lab
Alphasense
(OPC-N2)
Discontinued
 450 PM10 0.45 to 0.57 - 0.99 - Field
Lab
Alphasense
(OPC-N3)
 340 PM1.0 0.78 to 0.82 4.4 to 5.0 0.99 39.0 to 43.2 Field
Lab
Alphasense
(OPC-N3)
 340 PM2.5 0.52 to 0.67 7.1 to 9.2 0.99 40.3 to 46.9 Field
Lab
Alphasense
(OPC-N3)
 340 PM10 0.45 to 0.52 18.0 to 24.1 0.99 39.2 to 48.0 Field
Lab
Alphasense
(OPC-R2)
435 PM1.0 0.77 to 0.87 7.8 to 11.8 - - Field
Lab
Alphasense
(OPC-R2)
435 PM2.5 0.67 to 0.78 7.3 to 10.0 0.98 41.2 to 45.0 Field
Lab
Alphasense
(OPC-R2)
435 PM10 0.69 to 0.86 7.8 to 15.4 0.98 to 0.99 18.5 to 27.9 Field
Lab
Applied Particle
Technology
(MINIMA)
 995 PM1.0 0.84 to 0.89 5.0 to 5.6 - - Field
Lab
Applied Particle
Technology
(MINIMA)
 995 PM2.5 0.86 to 0.89 5.8 to 6.5 0.99 5.0 to 8.1 Field
Lab
Applied Particle
Technology
(MINIMA)
 995 PM10 0.37 39.4 to 40.3 - - Field
Lab
AQMesh
(v3.0 PM, v5.1 Gas)
7800 PM1.0 0.55 to 0.73 2.4 to 3.4 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 PM2.5 0.47 to 0.79 2.7 to 7.5 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 PM10 0.24 to 0.58 11.4 to 23.1 - - Field
AS-LUNG
(Air Quality Station)
Discontinued
 2199 PM1.0 0.42 to 0.88 3.2 to 7.3 - - Field
AS-LUNG
(Air Quality Station)
Discontinued
 2199 PM2.5 0.59 to 0.81 8.0 to 12.1 - - Field
AS-LUNG
(Air Quality Station)
Discontinued
 2199 PM10 0.15 to 0.23 18.6 to 21.2 - - Field
AS-LUNG
(Portable)
Discontinued
 1000 PM1.0 0.86 3.2 to 4.3 0.99 2.6 to 3.4 Field
Lab
AS-LUNG
(Portable)
Discontinued
 1000 PM2.5 0.78 6.8 to 8.2 0.99 12.8 to 13.5 Field
Lab
AS-LUNG
(Portable)
Discontinued
 1000 PM10 0.11 to 0.14 18.9 to 21.6 - - Field
Lab
Atmotube
(Pro)
Discontinued
 159 PM1.0 0.91 to 0.93 3.6 to 4.6 0.99 to 1.00 2.18 to 6.92 Field
Lab
Atmotube
(Pro)
Discontinued
 159 PM2.5 0.88 4.9 to 5.9 1.00 2.51 to 4.65 Field
Lab
Atmotube
(Pro)
Discontinued
 159 PM10 0.22 20.9 to 22.9 - - Field
Lab
Atmotube
(Pro)
Discontinued
 159 tVOC (MOx) 0.95
(low ramp)		 270 to 280
(low ramp)		 Field
Lab
Atmotube
(Pro)
Discontinued
 159 tVOC (MOx) 0.91 to 0.99
(high ramp)		 4840 to 5050
(high ramp)		 Field
Lab
Atmocube
369 PM1.0 0.80 to 0.84 2.4 to 3.2 - - Field
Atmocube
369 PM2.5 0.65 to 0.66 5.3 to 6.5 - - Field
Atmocube
369 PM10 0.09 37.1 to 38.8 - - Field
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 PM1.0 0.89 to 0.90 3.7 to 4.2 0.99 24.3 to 25.9 Field
Lab
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 PM2.5 0.87 to 0.88 3.4 to 3.8 0.99 16.1 to 18.4 Field
Lab
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 PM10 0.28 to 0.29 23.9 to 24.7 - - Field
Lab
Aurassure (Trust Lite)
850 PM1.0 0.84 to 0.85 2.0 to 2.3 - - Field
Aurassure (Trust Lite)
850 PM2.5 0.65 to 0.66 5.0 to 5.3 - - Field
Aurassure (Trust Lite)
850 PM10 0.07 to 0.08 36.9 to 37.3 - - Field
Blues Wireless
(Airnote)
175 PM1.0 0.68 to 0.86 4.3 to 6.8 - - Field
Blues Wireless
(Airnote)
175 PM2.5 0.67 to 0.75 4.4 to 7.1 - - Field
Blues Wireless
(Airnote)
175 PM10 0.04 to 0.11 20.2 to 34.8 - - Field
Cair
200 PM(1-2) 0.43 to 0.51 - - - Field
Cair
200 PM(3-10) 0.39 to 0.51 - - - Field
Clarity
(Node)
1300 PM2.5 0.73 to 0.76 3.0 to 3.4 0.99 9.3 to 10.6 Field
Lab
Davis Instruments
(Airlink)
235 PM1.0 0.85 to 0.88 2.2 to 2.8 - - Field
Lab
Davis Instruments
(Airlink)
235 PM2.5 0.74 to 0.81 4.9 to 5.9 0.99 4.3 to 6.6 Field
Lab
Davis Instruments
(Airlink)
235 PM10 0.25 to 0.31 12.1 to 26.0 - - Field
Lab
Dylos
(DC1100 Pro)
261 PM(0.5-2.5) 0.65 to 0.85 4.2 0.89 - Field
Lab
Dylos
(DC1700-PM)
475 PM2.5 0.58 to 0.68 24.3 to 28.5 0.95 198.3 to 209.4 Field
Lab
Dylos
(DC1700-PM)
475 PM10 0.15 to 0.18 43.9 to 53.8 - - Field
Lab
Ecowitt
(WH415B)
72 PM2.5 0.35 to 0.47 8.2 to 15.4 - - Field
Ecomesure
(EcomSmart)
Discontinued
 4550 PM1.0 0.63 to 0.74 5.6 to 7.1 0.92 1.6 to 3.7 Field
Lab
Ecomesure
(EcomSmart)
Discontinued
 4550 PM2.5 0.54 to 0.74 7.0 to 9.6 0.92 5.8 to 10.9 Field
Lab
Ecomesure
(EcomSmart)
Discontinued
 4550 PM10 0.08 to 0.25 16.7 to 20.3 - - Field
Lab
Edimax
(AirBox)
 200 PM2.5 0.61 to 0.87 4.4 to 5.5 - - Field
Edimax
(Edigreen Home)
 294 PM2.5 0.82 to 0.83 3.3 to 4.4 - - Field
Elitech
(Temtop LKC-1000S+)
 188 PM2.5 0.91 to 0.92 3.1 to 3.6 0.99 11.1 to 21.9 Field
Lab
Elitech
(Temtop LKC-1000S+)
 188 PM10 0.31 to 0.35 11.7 to 17.9 - - Field
Lab
Elitech
(Temtop M2000
2nd Generation)
 210 PM2.5 0.77 to 0.82 2.1 to 3.2 0.99 13.3 to 21.5 Field
Lab
Elitech
(Temtop M2000
2nd Generation)
 210 PM10 0.17 to 0.28 12.1 to 14.1 - - Field
Lab
Elitech
(Temtop P20)
 110 PM2.5 0.42 to 0.87 3.8 to 6.1 0.99 5.1 to 10.7 Field
Lab
Elitech
(Temtop PMD 351)
 1859 PM1.0 0.68 to 0.75 2.4 to 3.8 - - Field
Lab
Elitech
(Temtop PMD 351)
 1859 PM2.5 0.71 to 0.74 3.8 to 5.8 0.99 26.7 to 28.8 Field
Lab
Elitech
(Temtop PMD 351)
 1859 PM10 0.27 to 0.46 9.1 to 18.6 - - Field
Lab
Fablab
(Smart Citizen
Kit v2.1)
Discontinued
 119 PM1.0 0.94 2.9 to 3.0 0.99 11.0 to 11.5 Field
Lab
Fablab
(Smart Citizen
Kit v2.1)
Discontinued
 119 PM2.5 0.76 to 0.77 8.3 to 10.7 0.99 11.8 to 14.5 Field
Lab
Fablab
(Smart Citizen
Kit v2.1)
Discontinued
 119 PM10 0.06 to 0.09 48.2 to 56.9 - - Field
Lab
Foobot
Discontinued
 200 PM2.5 0.55 - - - Field
GGSensors
(TAM)
 7999 PM1.0 0.93 5.2 to 5.5 0.99 24.5 to 25.4 Field
Lab
GGSensors
(TAM)
 7999 PM2.5 0.92 5.4 to 5.7 0.99 21.4 to 22.3 Field
Lab
GGSensors
(TAM)
 7999 PM10 0.56 to 0.57 27.4 to 28.0 - - Field
HabitatMap
(AirBeam)
Discontinued
 200 PM2.5 0.65 to 0.70 15.6 to 29.0 0.87 203.5 to 271.9 Field
Lab
HabitatMap
(AirBeam2)
Discontinued
 250 PM1.0 2.9 to 3.0 0.99 16.5 to 18.1 Field
Lab
HabitatMap
(AirBeam2)
Discontinued
 250 PM2.5 0.63 to 0.75 3.3 to 3.7 0.99 11.3 to 13.5 Field
Lab
HabitatMap
(AirBeam2)
Discontinued
 250 PM10 0 25.8 to 28.0 - - Field
Lab
HabitatMap
(AirBeam3)
Discontinued
 249 PM1.0 0.95 to 0.97 1.3 to 2.6 0.99 1.5 to 5.7 Field
Lab
HabitatMap
(AirBeam3)
Discontinued
 249 PM2.5 0.81 to 0.90 3.6 to 5.3 0.99 2.6 to 11.6 Field
Lab
HabitatMap
(AirBeam3)
Discontinued
 249 PM10 0.19 to 0.25 20.4 to 26.8 - - Field
Lab
Hanvon
(Hanvon N1)
 200 PM2.5 0.52 to 0.79 - - - Field
Igienair
(Zaack AQI)
 3000 PM1.0 0.78 to 0.83 6.3 to 6.5 - - Field
Lab
Igienair
(Zaack AQI)
 3000 PM2.5 0.80 to 0.82 3.8 to 4.2 0.97 5.3 to 23.0 Field
Lab
Igienair
(Zaack AQI)
 3000 PM10 0.69 to 0.71 14.4 to 23.9 0.99 6.0 to 13.1 Field
Lab
IQAir
(AirVisual Outdoor)
 300 PM1.0 0.52 to 0.64 4.5 to 5.6 - - Field
IQAir
(AirVisual Outdoor)
 300 PM2.5 0.54 to 0.65 4.4 to 6.0 - - Field
IQAir
(AirVisual Outdoor)
 300 PM10 0.39 to 0.60 10.5 to 14.4 - - Field
IQAir
(AirVisual Pro)
Discontinued
 270 PM2.5 0.69 to 0.73 4.4 to 4.7 0.99 26.8 to 37.0 Field
Lab
IQAir
(AirVisual Pro)
Discontinued
 270 PM10 0.24 to 0.41 16.6 to 22.7 - - Field
Lab
IQAir
(AirVisual
Pro FW1.1683)
 330 PM2.5 0.63 to 0.81 3.5 to 5.5 0.99 1.8 to 10.8 Field
Lab
Kaiterra
(Laser Egg 2+)
Discontinued
 199 PM2.5 0.81 to 0.85 3.3 to 4.0 0.99 15.2 to 23.3 Field
Lab
Kaiterra
(Laser Egg 2+)
Discontinued
 199 PM10 0.17 to 0.25 8.0 to 17.3 - - Field
Lab
Kunak
(Air A10)
Discontinued
 3000 PM1.0 - - 0.99 10.4 to 17.1 Field
Lab
Kunak
(Air A10)
Discontinued
 3000 PM2.5 0.69 to 0.75 5.4 to 6.4 0.99 4.3 to 14.4 Field
Lab
Kunak
(Air A10)
Discontinued
 3000 PM10 0.60 to 0.68 18.7 to 21.9 0.99 8.9 to 23.5 Field
Lab
Kunak
(Air Lite)
 5532 PM1.0 0.76 to 0.79 2.6 to 3.8 - - Field
Kunak
(Air Lite)
 5532 PM2.5 0.88 to 0.90 2.1 to 2.8 - - Field
Kunak
(Air Lite)
 5532 PM10 0.61 to 0.62 16.7 to 18.2 - - Field
Kunak
(Air Pro)
 10026 PM1.0 0.85 to 0.86 1.9 to 2.0 - - Field
Kunak
(Air Pro)
 10026 PM2.5 0.86 to 0.87 2.4 to 2.5 - - Field
Kunak
(Air Pro)
 10026 PM10 0.66 to 0.67 9.2 to 11.1 - - Field
Liveable Cities
(SLX-PM)
 954 PM2.5 0.79 to 0.83 6.4 to 9.1 - - Field
Liveable Cities
(SLX-PM)
 954 PM10 0.71 to 0.77 11.9 to 18.1 - - Field
Lunar Outpost
(Canary-S)
1070 PM2.5 0.83 3.3 to 3.8 - - Field
Lunar Outpost
(Canary-S)
1070 PM10 0.14 27.4 to 28.6 - - Field
Magnasci SRL
(uRADMonitor A3 HW105)
 500 PM1.0 0.81 to 0.85 4.0 to 5.2 - - Field
Magnasci SRL
(uRADMonitor A3 HW105)
 500 PM2.5 0.72 to 0.81 5.2 to 8.9 - - Field
Magnasci SRL
(uRADMonitor A3 HW105)
 500 PM10 0.15 to 0.38 20.3 to 29.1 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 PM1.0 0.74 to 0.83 2.7 to 3.7 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 PM2.5 0.70 to 0.78 4.1 to 8.1 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 PM10 0.13 to 0.34 18.1 to 25.7 - - Field
Magnasci SRL
(uRADMonitor
SMOGGIE-PM v1.101)
 110 PM1.0 0.84 to 0.86 4.8 to 5.6 0.99 25.3 to 26.8 Field
Lab
Magnasci SRL
(uRADMonitor
SMOGGIE-PM v1.101)
 110 PM2.5 0.60 to 0.81 2.1 to 2.8 0.99 19.5 to 22.9 Field
Lab
Magnasci SRL
(uRADMonitor
SMOGGIE-PM v1.101)
 110 PM10 0.03 to 0.06 17.5 to 25.2 - - Field
Lab
Met One
(C-12)
 7100 BC 0.66 to 0.75 0.10 to 0.13 - - Field
Met One
(E-Sampler)
 7500 PM1.0 - - - - Field
Met One
(E-Sampler)
 7500 PM2.5 0.55 to 0.62 10.9 to 15.2 - - Field
Met One
(E-Sampler)
 7500 PM10 - - - - Field
Met One
(E-Sampler)
 7500 TSP - - - - Field
Met One
(ES-405)
 6600 PM1.0 0.84 to 0.91 2.8 to 3.6 - - Field
Lab
Met One
(ES-405)
 6600 PM2.5 0.80 to 0.92 3.5 to 4.0 0.99 19.0 to 21.2 Field
Lab
Met One
(ES-405)
 6600 PM10 0.78 to 0.92 4.5 to 8.9 0.99 10.4 to 24.4 Field
Lab
Met One
(Neighborhood Monitor)
Discontinued
 1900 PM2.5 0.53 to 0.67 6.0 to 8.4 - - Field
Moji China
(Airnut)
Discontinued
 150 PM2.5 0.81 to 0.88 - - - Field
Oizom
(Dustroid Pro V6)
 6000 PM1.0 0.83 to 0.90 1.7 to 3.3 - - Field
Oizom
(Dustroid Pro V6)
 6000 PM2.5 0.84 to 0.93 2.1 to 4.8 - - Field
Oizom
(Dustroid Pro V6)
 6000 PM10 0.59 to 0.75 6.7 to 14.9 - - Field
Oizom
(Polludrone Smart)
 8000 PM1.0 0.82 to 0.86 4.5 to 5.0 - - Field
Oizom
(Polludrone Smart)
 8000 PM2.5 0.76 to 0.81 5.4 to 6.1 0.97 20.0 to 20.7 Field
Lab
Oizom
(Polludrone Smart)
 8000 PM10 0.33 to 0.34 14.3 to 15.5 - - Field
Origins
(Laser Egg)
Discontinued
 200 PM2.5 0.58 - - - Field
Origins
(Laser Egg)
Discontinued
 200 PM10 0 - - - Field
PAMAir
(Airmazing
PAS-OA-320-3G)
 500 PM2.5 0.84 to 0.86 3.8 to 4.0 - - Field
Perkin Elmer
(ELM)
Discontinued
 5200 PM 0 20.6 to 30.5 - - Field
Piera Systems
(Canaree R1)
 299 PM1.0 0.82 to 0.91 3.2 to 4.5 0.99 4.4 to 11.5 Field
Lab
Piera Systems
(Canaree R1)
 299 PM2.5 0.69 to 0.90 6.3 to 7.2 0.99 31.3 to 44.0 Field
Lab
Piera Systems
(Canaree R1)
 299 PM10 0.19 to 0.35 16.3 to 22.6 - - Field
Lab
Plume Labs
(Flow 2)
 199 PM1.0 0.01 to 0.14 - - - Field
Plume Labs
(Flow 2)
 199 PM2.5 0.01 to 0.13 7.3 to 10.6 - - Field
Plume Labs
(Flow 2)
 199 PM10 0 to 0.04 19.3 to 28.3 - - Field
PM Monitor
(iMonPM)
 695 PM1.0 0.77 to 0.89 2.2 to 3.8 0.98 1.1 to 2.4 Field
Lab
PM Monitor
(iMonPM)
 695 PM2.5 0.76 to 0.89 3.4 to 4.3 0.98 2.7 to 4.1 Field
Lab
PM Monitor
(iMonPM)
 695 PM10 0.38 to 0.62 12.0 to 17.8 0.99 8.2 to 9.4 Field
Lab
PurpleAir
(PA-I)
Discontinued
 150 PM1.0 0.93 to 0.95 - 0.95 - Field
Lab
PurpleAir
(PA-I)
Discontinued
 150 PM2.5 0.90 to 0.92 - 0.99 - Field
Lab
PurpleAir
(PA-I)
Discontinued
 150 PM10 0.32 to 0.44 - 0.97 - Field
Lab
PurpleAir
(PA-I-Indoor)
 209 PM1.0 - - 0.99 5.1 to 9.5 Field
Lab
PurpleAir
(PA-I-Indoor)
 209 PM2.5 0.75 - 0.99 18.7 to 27.7 Field
Lab
PurpleAir
(PA-I-Indoor)
 209 PM10 0.36 to 0.46 - 0.97 4.4 to 20.4 Field
Lab
PurpleAir
(PA-II)
 239 PM1.0 0.96 to 0.98 - 0.99 11.7 to 15.9 Field
Lab
PurpleAir
(PA-II)
 239 PM2.5 0.93 to 0.97 - 0.99 1.7 to 4.2 Field
Lab
PurpleAir
(PA-II)
 239 PM10 0.66 to 0.70 - 0.95 15.6 to 20.5 Field
Lab
PurpleAir
(PA-II-FLEX)
 289 PM1.0 0.91 to 0.94 1.4 to 2.2 0.99 13.5 to 14.6 Field
Lab
PurpleAir
(PA-II-FLEX)
 289 PM2.5 0.78 to 0.88 3.4 to 3.8 0.99 1.7 to 2.2 Field
Lab
PurpleAir
(PA-II-FLEX)
 289 PM10 0.21 to 0.39 15.3 to 24.8 - - Field
Lab
Qingping
(Air Monitor)
Discontinued
 135 PM2.5 0.86 to 0.90 1.8 to 2.3 0.95 to 0.98 11.1 to 21.1 Field
Lab
Qingping
(Air Monitor Lite)
 76 PM2.5 0.85 to 0.93 1.8 to 3.6 0.99 12.7 to 13.7 Field
Lab
Qingping
(Air Monitor Lite)
 76 PM10 0.37 to 0.43 16.2 to 20.1 - - Field
QuantAQ
(MODULAIR-PM)
 2495 PM1.0 0.87 to 0.94 4.1 to 6.8 - - Field
QuantAQ
(MODULAIR-PM)
 2495 PM2.5 0.84 to 0.88 4.0 to 5.2 - - Field
QuantAQ
(MODULAIR-PM)
 2495 PM10 0.46 to 0.78 14.7 to 21.6 - - Field
Redspira
 200 PM2.5 0.73 to 0.87 4.7 to 7.1 0.99 11.4 to 16.2 Field
Lab
Redspira
 200 PM10 0.31 to 0.37 30.8 to 33.1 - - Field
Lab
RTI
(MicroPEM)
Discontinued
 2000 PM2.5 0.65 to 0.90 6.4 to 8.3 0.99 - Field
Lab
SailBri Cooper
(SCI-901)
Discontinued
 5500 PM2.5 0.79 to 0.89 2.2 to 3.1 - - Field
SailBri Cooper
(SCI-901)
Discontinued
 5500 PM10 0.64 to 0.82 5.6 to 14.1 - - Field
SainSmart
(Pure MorningP3)
Discontinued
 170 PM2.5 0.71 to 0.74 4.8 to 5.4 0.99 - Field
Lab
SamyoungS&C
(SY-DS-DK3)
Discontinued
 100 PM2.5 0.60 to 0.62 4.8 to 11.4 0.98 36.1 to 51.8 Field
Lab
Sensirion
(Nubo) Discontinued
 2000 PM1.0 0.96 2.8 to 3.2 0.99 1.9 to 4.5 Field
Lab
Sensirion
(Nubo) Discontinued
 2000 PM2.5 0.91 4.7 to 5.2 0.99 4.9 to 7.6 Field
Lab
Sensirion
(Nubo Air)
Discontinued
 1700 PM1.0 0.77 to 0.89 2.9 to 3.5 - - Field
Sensirion
(Nubo Air)
Discontinued
 1700 PM2.5 0.73 to 0.83 5.2 to 6.5 - - Field
Sensirion
(SEN44)
Discontinued
 53 PM1.0 0.89 1.6 to 1.7 - - Field
Sensirion
(SEN44)
Discontinued
 53 PM2.5 0.82 2.9 to 3.0 - - Field
Sensirion
(SEN44)
Discontinued
 53 PM10 0.22 20.7 to 20.8 - - Field
Sensirion
(SEN54)
 28 PM1.0 0.87 to 0.88 2.1 to 2.4 - - Field
Sensirion
(SEN54)
 28 PM2.5 0.76 to 0.77 3.5 - - Field
Sensirion
(SEN54)
 28 PM10 0.18 to 0.19 28.6 to 28.7 - - Field
Sensirion
(SPS30)
 35 PM1.0 0.91 1.3 to 1.4 0.99 0.8 to 1.4 Field
Lab
Sensirion
(SPS30)
 35 PM2.5 0.80 to 0.83 2.0 to 5.1 0.99 5.4 to 6.5 Field
Lab
Sensirion
(SPS30)
 35 PM10 0.07 to 0.20 10.8 to 24.7 - - Field
Lab
Shinyei
(PM Evaluation Kit)
 1000 PM2.5 0.80 to 0.89 - 0.93 - Field
Lab
Strop de aer Discontinued
 284 PM2.5 0.71 to 0.77 6.3 to 8.8 0.99 29.0 to 32.0 Field
Lab
Strop de aer Discontinued
 284 PM10 0.15 to 0.26 19.5 to 30.7 - - Field
Lab
Tera Sensor
(NextPM)
 79 PM1.0 0.89 to 0.94 2.1 to 4.6 - - Field
Lab
Tera Sensor
(NextPM)
 79 PM2.5 0.87 to 0.95 3.9 to 5.6 0.99 30.2 to 32.0 Field
Lab
Tera Sensor
(NextPM)
 79 PM10 0.34 to 0.66 26.2 to 31.6 0.99 23.9 to 24.4 Field
Lab
TSI
(AirAssure)
Discontinued
 1500 PM2.5 0.81 to 0.83 - 0.99 32.4 to 55.0 Field
Lab
TSI
(BlueSky)
 480 PM2.5 0.65 to 0.76 4.9 to 5.9 0.99 3.1 to 6.2 Field
Lab
TSI
(BlueSky)
 480 PM10 0.09 to 0.21 22.7 to 26.3 - - Field
Lab
uHoo
369 PM2.5 0 9.5 to 17.8 - - Field
2B Technologies
(POM)
 7150 O3 (UV, FEM) 1 1.0 to 1.9 0.99 3.7 to 14.5 Field
Lab
Aeroqual
(AQY-R)
 5000 NO2 (EC) 0.82 to 0.86 2.8 to 3.1 0.99 28.7 to 66.1 Field
Lab
Aeroqual
(AQY-R)
 5000 O3 (MOx) 0.94 to 0.98 3.0 to 4.8 0.99 7.7 to 27.4 Field
Lab
Aeroqual
(AQY v0.5)
Discontinued
 3000 NO2 (EC) 0.77 - 0.98 - Field
Lab
Aeroqual
(AQY v0.5)
Discontinued
 3000 O3 (MOx) 0.95 - 0.98 - Field
Lab
Aeroqual
(AQY v1.0)
Discontinued
 4000 NO2 (EC) 0.60 to 0.77 4.1 to 5.3 - - Field
Aeroqual
(AQY v1.0)
Discontinued
 4000 O3 (MOx) 0.96 to 0.97 2.4 to 7.3 - - Field
Aeroqual
(S-500)
 500 O3 (MOx) 0.85 - 0.99 - Field
Lab
Airly
 750 NO2 (EC) 0.54 to 0.80 42.4 to 48.1 - - Field
Airly
 750 O3 (EC) 0.90 to 0.94 19.3 to 22.9 - - Field
Air Quality Egg
(Ver. 1)
Discontinued
 200 CO (MOx) 0 - - - Field
Air Quality Egg
(Ver. 1)
Discontinued
 200 NO2 (MOx) 0.4 - - - Field
Air Quality Egg
(Ver. 1)
Discontinued
 200 O3 (MOx) 0.85 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 CO (EC) 0 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 NO2 (EC) 0 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 O3 (EC) 0.0 to 0.20 - - - Field
Air Quality Egg
(Ver. 2)
Discontinued
 240 SO2 (EC) - - - -
Air Quality Egg
(2022 Model)
Discontinued
 671 CO (EC) 0.60 to 0.78 150 to 210.0 - - Field
Air Quality Egg
(2022 Model)
Discontinued
 671 NO2 (EC) 0.39 to 0.55 20.8 to 32.0 0.99 5.5 to 61.8 Field
Lab
Air Quality Egg
(2022 Model)
Discontinued
 671 O3 (EC) 0.20 to 0.51 13.2 to 18.0 0.98 4.7 to 21.0 Field
Lab
Air Quality Egg
(2024 Model)
 2694 CO (EC) 0.38 to 0.74 125.3 to 207.4 Field
Air Quality Egg
(2024 Model)
 2694 NO2 (EC) 0.80 to 0.81 32.9 to 36.2 Field
Air Quality Egg
(2024 Model)
 2694 O3 (EC) 0.56 to 0.74 18.9 to 22.8 Field
APIS
Discontinued
 4995 CO (EC) 0.87 to 0.90 70.0 to 99.8 - - Field
APIS
Discontinued
 4995 NO (EC) 0.87 to 0.97 1.3 to 2.6 - - Field
APIS
Discontinued
 4995 NO2 (EC) 0.30 to 0.44 6.1 to 9.4 - - Field
APIS
Discontinued
 4995 O3 (EC) 0.73 to 0.83 14.2 to 19.1 - - Field
AQMesh
(V4.0)
Discontinued
 10000 CO (EC) 0.42 to 0.80 - - - Field
AQMesh
(V4.0)
Discontinued
 10000 NO (EC) 0.0 to 0.44 - - - Field
AQMesh
(V4.0)
Discontinued
 10000 NO2 (EC) 0.0 to 0.46 - - - Field
AQMesh
(V4.0)
Discontinued
 10000 O3 (EC) 0.46 to 0.83 - - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 CO (EC) 0.90 to 0.94 40.0 to 52.3 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 NO (EC) 0.67 to 0.76 10.9 to 12.3 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 NO2 (EC) 0.49 to 0.54 7.6 to 8.4 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 NOx (EC) 0.73 to 0.84 15.0 to 18.9 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 O3 (EC) 0.62 to 0.74 12.9 to 14.4 - - Field
AQMesh
(v3.0 PM, v5.1 Gas)
7800 SO2 (EC) - - - - Field
Atmocube
369 CO (EC) 0.0 to 0.11 218.2 to 699.2 Field
Atmocube
369 O3 (EC) 0.65 to 0.83 34.0 to 36.7 Field
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 CO (EC) 0.75 to 0.78 57.7 to 60.9 Field
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 NO (EC) 0.52 to 0.87 8.1 to 11.5 Field
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 NO2 (EC) 0.16 to 0.21 9.2 to 9.8 Field
A.U.G. Signals Ltd
(AirSENCE Standard
AS400X)
 4000 O3 (EC) 0.82 to 0.85 9.0 to 9.3 Field
CairPol Cairsens
(CO)
 1243 CO (EC) 0.93 to 0.94 93.6 to 134.9 - - Field
CairPol Cairsens
(NO2)
 1198 NO2 (EC) 0.0 to 0.12 6.0 to 14.6 - - Field
Ecomesure
(EcomSmart)
Discontinued
 4550 CO (EC) 0.75 to 0.81 79.4 to 125.1 0.91 873.8 to 1277.5 Field
Lab
Ecomesure
(EcomSmart)
Discontinued
 4550 O3 (EC) 0.63 to 0.64 11.4 to 25.7 0.87 13.4 to 30.2 Field
Lab
Ecomesure
(EcomSmart)
Discontinued
 4550 NO2 (EC) 0.39 to 0.56 13.3 to 21.6 0.89 81.1 to 85.0 Field
Lab
Igienair
(Zaack AQI)
 3000 CO (EC) 0.84 to 0.87 276.0 to 329.6 0.98 2604 to 3910 Field
Lab
Igienair
(Zaack AQI)
 3000 NO2 (EC) 0.53 to 0.58 7.2 to 8.0 0.99 12.9 to 13.3 Field
Lab
Igienair
(Zaack AQI)
 3000 O3 (EC) 0 20.7 to 23.9 0.98 18.0 to 24.4 Field
Lab
Kunak
(Air A10)
Discontinued
 5000 CO (EC) 0.55 to 0.60 38.9 to 42.0 - - Field
Kunak
(Air A10)
Discontinued
 5000 NO (EC) 0.78 to 0.93 1.1 to 1.7 - - Field
Kunak
(Air A10)
Discontinued
 5000 NO2 (EC) 0.24 to 0.32 6.6 to 7.4 - - Field
Kunak
(Air A10)
Discontinued
 5000 O3 (EC) 0.86 to 0.88 4.8 to 5.9 - - Field
Kunak
(Air Lite)
 5532 NO2 (EC) 0.66 to 0.70 4.2 to 4.5 Field
Kunak
(Air Lite)
 5532 O3 (EC) 0.85 to 0.89 4.7 to 6.8 Field
Kunak
(Air Pro)
 10026 CO (EC) 0.84 to 0.86 54.6 to 57.5 Field
Kunak
(Air Pro)
 10026 NO (EC) 0.99 2.4 to 2.9 Field
Kunak
(Air Pro)
 10026 NO2 (EC) 0.69 to 0.75 3.9 to 4.3 Field
Kunak
(Air Pro)
 10026 NOx (EC) 0.93 to 0.94 4.5 to 5.0 Field
Kunak
(Air Pro)
 10026 O3 (EC) 0.85 to 0.89 5.6 to 6.5 Field
Liveable Cities
(SLX-NO2)
Discontinued
 569 NO2 (EC) 0.42 to 0.55 18.4 to 18.8 - - Field
Liveable Cities
(SLX-O3)
Discontinued
 569 O3 (MOx) 0.08 to 0.10 14.2 to 19.1 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 CO (EC) 0.00 to 0.07 224.9 to 290.7 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 NO2 (EC) 0.00 to 0.05 11.6 to 24.8 - - Field
Magnasci SRL
(uRADMonitor
INDUSTRIAL HW103)
 1300 O3 (EC) 0.00 to 0.08 15.0 to 19.5 - - Field
Oizom
(Polludrone Smart)
 8000 CO (EC) 0.64 to 0.71 76 to 81 0.35 2632 to 2981 Field
Lab
Oizom
(Polludrone Smart)
 8000 NO (EC) 0.10 to 0.35 21.1 to 24.6 - - Field
Oizom
(Polludrone Smart)
 8000 NO2 (EC) 0.002 to 0.03 20.6 to 29.1 - - Field
Oizom
(Polludrone Smart)
 8000 O3 (EC) 0.14 to 0.23 18.9 to 19.7 - - Field
Perkin Elmer
(ELM)
Discontinued
 5200 NO2 (MOx) 0 11.9 to 14.1 - - Field
Perkin Elmer
(ELM)
Discontinued
 5200 O3 (MOx) 0.89 to 0.96 4.6 to 9.8 - - Field
Plume Labs
(Flow 2)
 199 NO2 (MOx) 0.04 to 0.14 11.2 to 17.6 - - Field
Smart Citizen Kit
Discontinued
 200 CO (MOx) 0.50 to 0.85 - - - Field
Smart Citizen Kit
Discontinued
 200 NO2 (MOx) 0 - - - Field
Spec Sensors
 500 CO (EC) 0.84 to 0.90 - - - Field
Spec Sensors
 500 NO2 (EC) 0.0 to 0.16 - - - Field
Spec Sensors
 500 O3 (EC) 0.0 to 0.24 - - - Field
uHoo
369 CO (MOx) 0 360 - - Field
uHoo
369 O3 (MOx) 0.43 to 0.72 14.5 to 68.8 - - Field
UNITEC SENS-IT
(CO)
 2200 CO (MOx) 0.33 to 0.43 117.1 to 736.8 0.99 - Field
Lab
UNITEC SENS-IT
(NO2)
 2200 NO2 (MOx) 0.57 to 0.62 16.2 to 20.6 - - Field
UNITEC SENS-IT
(O3)
 2200 O3 (MOx) 0.72 to 0.83 11.0 to 13.4 0.82 to 0.90 - Field
Lab
Vaisala
(AQT410)
Ver. 1.11
Discontinued
 3700 CO (EC) 0.28 to 0.31 - - - Field
Vaisala
(AQT410)
Ver. 1.11
Discontinued
 3700 NO2 (EC) 0 - - - Field
Vaisala
(AQT410)
Ver. 1.11
Discontinued
 3700 O3 (EC) 0.40 to 0.58 - - - Field
Vaisala
(AQT410)
Ver. 1.11
Discontinued
 3700 SO2 (EC) - - - - Field
Vaisala
(AQT410)
Ver. 1.15
Discontinued
 3700 CO (EC) 0.80 to 0.83 222 to 234 - - Field
Vaisala
(AQT410)
Ver. 1.15
Discontinued
 3700 NO2 (EC) 0.43 to 0.61 13.0 to 16.3 - - Field
Vaisala
(AQT410)
Ver. 1.15
Discontinued
 3700 O3 (EC) 0.66 to 0.82 6.6 to 8.9 - - Field
Vaisala
(AQT410)
Ver. 1.15
Discontinued
 3700 SO2 (EC) - - - - Field
Vaisala
(AQT530)
Ver. 3.1
Discontinued
 3500 CO (EC) 0.91 to 0.92 72.2 to 85.9 0.96 74.5 to 301.7 Field
Lab
Vaisala
(AQT530)
Ver. 3.1
Discontinued
 3500 NO (EC) 0.67 to 0.71 15.6 to 22.3 - - Field
Lab
Vaisala
(AQT530)
Ver. 3.1
Discontinued
 3500 NO2 (EC) 0.39 to 0.60 11.3 to 16.7 0.96 8.1 to 38.6 Field
Lab
Vaisala
(AQT530)
Ver. 3.1
Discontinued
 3500 O3 (EC) 0.22 to 0.46 11.2 to 13.8 0.97 3.0 to 42.5 Field
Lab
Air Quality Egg
(2024 Model)
 2694 PM1.0 0.88 to 0.89 4.9 to 5.7 Field
Air Quality Egg
(2024 Model)
 2694 PM2.5 0.89 4.2 to 4.3 Field
Air Quality Egg
(2024 Model)
 2694 PM10 0.34 to 0.35 40.7 to 42.1 Field
Particles Plus
(Community CPC)
 5995 UFP 0.94 to 0.95 1045.4 to 1185.0 (#/cm3) Field
HabitatMap
(AirBeam Mini)
 99 PM2.5 0.64 3.1 to 3.3 Field
Airthings
(Space Pro)
 385 PM1.0 - - - - Field
Airthings
(Space Pro)
 385 PM2.5 0.44 to 0.49 5.4 to 8.3 - - Field
Airthings
(Space Pro)
 385 PM10 0.15 to 0.16 13.9 to 16.0 - - Field
Cubic Sensors
& Instruments
(PM2012SE-B)
 45 PM1.0 0.71 to 0.75 3.3 to 3.7 - - Field
Cubic Sensors
& Instruments
(PM2012SE-B)
 45 PM2.5 0.59 to 0.63 4.9 to 5.0 - - Field
Cubic Sensors
& Instruments
(PM2012SE-B)
 45 PM10 0.1 to 0.14 23.7 to 24.1 - - Field
Strop de Aer
(PM-Ultimate)
 245 PM1.0 0.69 to 0.72 3.4 to 3.6 - - Field
Strop de Aer
(PM-Ultimate)
 245 PM2.5 0.59 to 0.60 4.6 to 4.7 - - Field
Strop de Aer
(PM-Ultimate)
 245 PM10 0.12 to 0.13 25.4 to 25.8 - - Field
QuantAQ
(MODULAIR-PM; 2025 Evaluation)
 2495 PM1.0 - - - - Field
QuantAQ
(MODULAIR-PM; 2025 Evaluation)
 2495 PM2.5 0.86 to 0.93 4.4 to 5.3 - - Field
QuantAQ
(MODULAIR-PM; 2025 Evaluation)
 2495 PM10 0.78 to 0.90 12.3 to 15.8 - - Field
Bettair
(Static Node MK2 Series)
 6330 PM1.0 0.59 to 0.65 2.9 to 3.3 - - Field
Bettair
(Static Node MK2 Series)
 6330 PM2.5 0.48 to 0.54 4.5 to 5.0 - - Field
Bettair
(Static Node MK2 Series)
 6330 PM10 0.13 to 0.17 13.7 to 14.9 - - Field
Bettair
(Static Node MK2 Series)
 6330 CO (EC) 0.91 to 0.92 100 - - Field
Bettair
(Static Node MK2 Series)
 6330 NO (EC) 0.92 to 0.95 3.3 to 4.3 - - Field
Bettair
(Static Node MK2 Series)
 6330 NO2 (EC) 0.86 to 0.89 2.6 to 3.1 - - Field
Bettair
(Static Node MK2 Series)
 6330 O3 (EC) 0.91 to 0.93 4.8 to 6.4 - - Field
IKEA
(Vindstyrka)
Discontinued
 60 PM2.5 0.66 to 0.67 5.1 to 5.5 - - Field
IKEA
(Vindstyrka)
Discontinued
 60 tVOC (MOx) 0.89 to 0.95
(low ramp)		 -
(low ramp)		 Lab
IKEA
(Vindstyrka)
Discontinued
 60 tVOC (MOx) 0.03 to 0.08
(high ramp)		 -
(high ramp)		 Lab
AirGradient
(Open Air O-1PST)
 225 PM2.5 0.97 to 0.98 2.8 to 3.2 - - Field
Ecomesure
(EcomSmart 1)
 5664 PM1.0 0.87 to 0.91 2.9 to 3.9 - - Field
Ecomesure
(EcomSmart 1)
 5664 PM2.5 0.62 to 0.90 4.8 to 9.4 - - Field
Ecomesure
(EcomSmart 1)
 5664 PM10 0.45 to 0.64 16.1 to 26.2 - - Field
Ecomesure
(EcomSmart 1)
 5664 NO (EC) 0.00 to 0.94 9.8 to 28.2 - - Field
Ecomesure
(EcomSmart 1)
 5664 NO2 (EC) 0.45 to 0.84 4.4 to 10.5 - - Field
Ecomesure
(EcomSmart 1)
 5664 O3 (EC) 0.46 to 0.86 4.9 to 13.5 - - Field
Davis Instruments
(Airlink; 2026 Evaluation)
235 PM2.5 0.80 to 0.81 4.2 to 4.5 - - Field
Davis Instruments
(Airlink; 2026 Evaluation)
235 PM10 0.08 to 0.09 20.8 to 21.5 - - Field
PurpleAir
(PA-II; 2026 Evaluation)
 239 PM1.0 - - - - Field
PurpleAir
(PA-II; 2026 Evaluation)
 239 PM2.5 0.86 to 0.87 3.3 to 3.6 - - Field
PurpleAir
(PA-II; 2026 Evaluation)
 239 PM10 0.10 to 0.11 18.7 to 19.5 - - Field
Elitech
(Temtop Airing 2000)
 689 PM2.5 0.57 to 0.59 8.4 to 11.2 - - Field
Elitech
(Temtop Airing 2000)
 689 PM10 0.49 to 0.52 19.8 to 27.3 - - Field
EarthSense
(Zephyr)
 4777 PM1.0 - - - - Field
EarthSense
(Zephyr)
 4777 PM2.5 0.66 to 0.67 2.7 to 2.9 - - Field
EarthSense
(Zephyr)
 4777 PM10 0.21 17.5 to 18.1 - - Field
EarthSense
(Zephyr)
 4777 NO (EC) 0.32 to 0.35 1.8 to 1.9 - - Field
EarthSense
(Zephyr)
 4777 NO2 (EC) 0.61 to 0.62 4.6 to 4.8 - - Field
EarthSense
(Zephyr)
 4777 O3 (EC) 0.92 to 0.93 10.2 to 10.4 - - Field
All R2 values reported in these reports are based either on 5-min or 1-hr averaged data. The lab R2 values are based only on experiments conducted in the chamber at 20 degrees C and 40% RH. All field mean absolute error (MAE) values are based on either 5-min or 1-hr averaged data; all lab MAE values are based on the experiments conducted in the chamber at a "medium" concentration at 20 degrees C and 40% RH.

For VOC sensors, lab R2 and MAE values are reported as two ranges: one for a low concentration ramp and another for a high concentration ramp, based on experiments conducted at 20 degrees C and 40% RH using a VOC blend. Lab MAE values consider data only during a "medium" VOC blend concentration within that low or high concentration ramping experiment.

Not all sensors undergo both field and lab testing. 
Terms and Definitions
EC (electrochemical): a sensor type that measures gaseous pollutants. Please click here to learn more about the details of its operational principle.

FEM (Federal Equivalent Method): a method for ambient air monitoring that has been designated as an equivalent method to the Federal Reference Method in accordance with Title 40, Part 53 of the Code of Federal Regulations (40 CFR Part 53).

Gas: gaseous pollutants including carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO2), nitogen oxides (NOx), ozone (O3), total volatile organic compounds (tVOC).

MAE (Mean Absolute Error): is the absolute difference between the sensors and the reference instruments. The larger MAE values, the higher measurement errors as compared to the reference instruments.

MOx (metal oxide): a sensor type used to measure gaseous pollutants. Please click here to learn more about the details of its operational principle.

PID (photoionization detection): a sensor type used to measure gaseous pollutants. This sensor uses a high energy lamp to break apart gas molecules into charged particles that will land on a detector to create an electrical current.

PM (particulate matter): particle pollutants including PM1, PM2.5, PM10, ultrafine particle (UFP), black carbon (BC).

ppb (parts per billion): a unit measurement to express concentrations of gas pollutants in air.

R2 (R-squared; coefficient of determination): a statistical parameter measuring the degree of relation between two variables. Here, it measures the linear relationship between the sensor and the reference instrument. An R2 approaching the value of 1 reflects a near perfect correlation, whereas a value of 0 indicates a complete lack of correlation.

μg/m3 (micrograms per meter cubed): a unit of measurement for particles to express micrograms of particulate pollutant per cubic meter of air.

UV (ultra-violet): a sensor type used to measure gaseous pollutants. This sensor uses a high energy lamp to emit high frequency light which is absorbed by certain gases. The level of absorption is related to the concentration of that gas.


 

Disclaimer

     

All documents, reports, data, and other information provided on this website are for informational and/or educational use only.

Some sensors evaluated by AQ-SPEC were field-tested inside a custom-made aluminum enclosure to protect the sensors from windblown rain, harsh sunlight, and animals. The field evaluation reports contain data collected at an air monitoring station during a specific 30- to 60-day period and cannot be duplicated at a different location, season, or time period. As sensor performance may be affected by time- and location-specific environmental conditions at the test site, replication and/or duplication of results may not possible to achieve. The sensor assembly, installation, and use can also impact the performance of products evaluated by AQ-SPEC. No sensor calibration was performed by South Coast AQMD staff for these evaluations. Laboratory chamber testing may be necessary to fully evaluate the performance of these sensors under controlled temperature, humidity, pollutant, and interferent concentrations.

Lab evaluations were conducted in one of AQ-SPEC’s two environmental chambers with pollutant and interferent concentrations that were generated from nebulizer solutions, dust dispensers, and gas dilution calibrators. Lab environments may not be able to fully replicate the conditions experienced under ambient settings.

South Coast AQMD makes no claim, warranty, or guarantee that these devices will or will not work when operated by other users for their specific applications.

South Coast AQMD's AQ-SPEC aims at providing information to and for the benefit of the public to make informed purchasing decisions on air quality sensors. In accordance with this mission, the general policy of the Governing Board of the Agency is to exclude from the AQ-SPEC website all commercial advertising and promotional material, including links which provide exclusive private or financial benefit to commercial, non-public enterprises and which do not promote or enhance a public benefit to the general public. As a Government Agency, the South Coast AQMD neither endorses nor supports individual private commercial enterprises through display of their products on the AQ-SPEC website or through providing links to the sites of such commercial enterprises.

 

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