SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., MAR. 04, 2021 -------------------------------------------------------------------------------- SRA AREA 1-HR 8-HR 8-HR 24-HR 24-HR 1-HR MAX NUMBER OZONE OZONE CO PM10 PM2.5 NO2 AQI PPB PPB PPM UG/M3 UG/M3 PPB -------------------------------------------------------------------------------- Los Angeles County: South Coast Air Basin 1 Central LA Co 49 46 0.6 19 10 29 43 2 NW Coastal LA 49 44 0.5 18 8 24 41 3 SW Coastal LA 46 41 0.4 19 10 30 42 4 S Coastal LA 44 39 0.9 22 12 36 50 5 Southeast LA Co 42 37 0.8 23 13 31 53 6 W San Fernando Vly 56 52 0.5 16 9 35 48 7 E San Fernando Vly 54 51 0.5 19 8 36 47 8 W San Gabriel Vly 52 50 0.3 21 10 31 46 9 E San Gabriel Vly 47 42 0.5 23 13 22 53 10 Pomona Walnut Vly 50 43 0.3 33 12 27 50 11 S San Gabriel Vly 47 42 0.6 24 13 16 53 12 S Central LA Co 44 37 0.7 20 11 27 46 13 Santa Clarita Vly 58 53 0.5 17 5 36 49 15 San Gabriel Mts 58 53 0.5 32 6 36 49 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 49 47 0.2 17 4 33 44 Orange County: South Coast Air Basin 16 N Orange Co 47 42 0.4 27 13 24 53 17 Central Orange Co 44 40 0.5 24 9 20 38 18 N Coastal Orange Co 30 28 0.8 21 7 31 29 19 Saddleback Vly 57 51 0.7 25 10 30 47 20 Central Coastal 51 46 0.7 17 9 29 43 21 Capistrano Vly 57 52 0.7 15 9 33 48 Riverside County: South Coast Air Basin 22 Norco/Corona 55 45 0.7 31 12 31 50 23 Metro Riverside Co 49 42 0.6 32 10 32 42 24 Perris Vly 50 46 0.7 18 3 33 43 25 Lake Elsinore 55 49 0.7 9 3 34 45 26 Temecula Vly 55 52 0.6 13 7 29 48 27 Anza Vly 51 49 0.5 13 6 26 45 28 Hemet/San Jacinto 56 52 0.6 13 5 30 48 29 Banning 59 55 0.5 13 5 26 51 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- SRA AREA 1-HR 8-HR 8-HR 24-HR 24-HR 1-HR MAX NUMBER OZONE OZONE CO PM10 PM2.5 NO2 AQI PPB PPB PPM UG/M3 UG/M3 PPB -------------------------------------------------------------------------------- Riverside County: Salton Sea Air Basin 30 Coachella Vly 55 49 0.4 35 13 24 53 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 43 0.3 25 5 15 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 51 46 0.4 38 8 32 43 33 SW San Bernardino Vly 50 43 0.5 35 12 27 50 34 C San Bernardino Vly 53 46 0.5 12 6 15 43 35 E San Bernardino Vly 58 53 0.6 19 4 26 49 36 W San Bernardino Mtns 58 50 0.4 32 3 28 46 37 C San Bernardino Mtns 51 47 0.5 26 8 22 44 38 Big Bear Lake 55 53 0.5 26 5 24 49 San Bernardino County: Mojave Desert Air Basin 39 Phelan 56 49 0.4 25 3 29 45 40 Hesperia 54 51 0.5 26 7 28 47 41 Trona 52 48 0.3 22 3 29 44 42 Victorville 59 54 0.5 25 6 30 50 43 Yucca Vly 59 53 0.4 37 6 23 49 44 Barstow 53 47 0.5 20 5 26 44 45 Twentynine Palms 51 49 0.4 35 6 20 45 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., MAR. 04, 2021, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 44 Ozone Big Bear Lake AQI: 49 Ozone Central Mojave Desert AQI: 49 Ozone Coastal Area AQI: 50 PM2.5 Hemet/Elsinore Area AQI: 48 Ozone Inland Orange County AQI: 48 Ozone Northern Mojave Desert AQI: 44 Ozone Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 46 Ozone San Bernardino Valley AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 49 Ozone San Gabriel Mountains AQI: 49 Ozone Temecula/Anza Area AQI: 48 Ozone Victor Valley AQI: 50 Ozone MODERATE in the following area(s): Banning Pass Area AQI: 51 Ozone Coachella Valley/Low Desert AQI: 53 PM2.5 Metropolitan Area AQI: 53 PM2.5 San Gabriel Valley AQI: 53 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Thursday will be 4 to 8 degrees wamer with locally breezy east winds. Inversion Base: 11482 FT | Breaking Temperature: 90 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 5110 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: BURN Area 53 - Mojave Desert Air Basin: BURN Area 55 - Salton Sea Air Basin: BURN Beach Fire Ring Wood Burning: Allowed in All Areas Residential Wood Burning: Allowed in All Areas Coachella Valley Rule 403.1 Wind Forecast: Winds Below 25 MPH ------------------------------------------------------------------------ ATTENTION ALL SCHOOLS AND INDUSTRIES THIS IS THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT NO AIR POLLUTION OR HEALTH ADVISIORY EPISODES ARE PREDICTED FOR THURSDAY, MARCH 04, 2021 IN THE SOUTH COAST AIR BASIN.