SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., MAR. 27, 2026 -------------------------------------------------------------------------------- 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 74 62 0.5 40 20 31 74 2 NW Coastal LA 64 53 0.4 37 20 19 71 3 SW Coastal LA 56 46 0.2 39 17 17 66 4 S Coastal LA 60 51 0.3 45 17 23 66 5 Southeast LA Co 63 56 0.6 46 22 33 75 6 W San Fernando Vly 67 58 0.4 34 12 20 61 7 E San Fernando Vly 74 62 0.5 40 16 25 74 8 W San Gabriel Vly 84 72 0.4 40 17 18 105 9 E San Gabriel Vly 86 75 0.5 36 16 27 115 10 Pomona Walnut Vly 83 69 0.6 45 22 32 97 11 S San Gabriel Vly 72 62 0.6 45 23 33 77 12 S Central LA Co 62 53 0.4 42 21 21 73 13 Santa Clarita Vly 78 67 0.3 34 11 26 90 15 San Gabriel Mts 78 68 0.5 38 12 27 93 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 76 65 0.4 31 13 29 84 Orange County: South Coast Air Basin 16 N Orange Co 70 60 0.3 48 20 21 71 17 Central Orange Co 56 50 0.4 48 17 17 66 18 N Coastal Orange Co 60 51 0.3 43 10 21 53 19 Saddleback Vly 66 59 0.3 48 9 21 64 20 Central Coastal 63 56 0.3 40 11 18 55 21 Capistrano Vly 63 56 0.4 35 10 17 54 Riverside County: South Coast Air Basin 22 Norco/Corona 85 71 0.5 54 18 25 101 23 Metro Riverside Co 96 77 0.5 58 20 28 122 24 Perris Vly 69 62 0.4 44 12 32 74 25 Lake Elsinore 60 56 0.4 33 12 17 56 26 Temecula Vly 50 47 0.3 39 6 16 44 27 Anza Vly 57 51 0.3 44 6 15 47 28 Hemet/San Jacinto 57 54 0.4 36 6 34 50 29 Banning 59 57 0.4 32 6 34 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 72 64 0.2 52 12 13 80 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 54 51 0.2 35 6 13 47 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 91 76 0.6 27 16 27 118 33 SW San Bernardino Vly 85 70 0.6 53 22 34 100 34 C San Bernardino Vly 88 74 0.5 41 14 40 112 35 E San Bernardino Vly 83 72 0.5 47 10 34 105 36 W San Bernardino Mtns 84 70 0.5 32 9 35 100 37 C San Bernardino Mtns 90 75 0.4 39 6 38 115 38 Big Bear Lake 65 60 0.4 36 6 34 67 San Bernardino County: Mojave Desert Air Basin 39 Phelan 66 60 0.4 31 6 39 67 40 Hesperia 68 63 0.4 29 8 41 77 41 Trona 52 49 0.3 19 6 10 45 42 Victorville 70 63 0.4 31 10 42 77 43 Yucca Vly 64 59 0.3 35 6 23 64 44 Barstow 72 62 0.3 33 7 45 74 45 Twentynine Palms 60 55 0.3 36 6 20 51 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., MAR. 27, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Temecula/Anza Area AQI: 47 Ozone MODERATE in the following area(s): Antelope Valley AQI: 84 Ozone Banning Pass Area AQI: 58 Ozone Big Bear Lake AQI: 67 Ozone Central Mojave Desert AQI: 64 Ozone Coachella Valley/Low Desert AQI: 80 Ozone Coastal Area AQI: 71 PM2.5 Hemet/Elsinore Area AQI: 74 Ozone Inland Orange County AQI: 66 PM2.5 Metropolitan Area AQI: 75 PM2.5 Northern Mojave Desert AQI: 74 Ozone San Fernando/Santa Clarita Valleys AQI: 90 Ozone San Gabriel Mountains AQI: 93 Ozone Victor Valley AQI: 77 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Riverside Valley AQI: 122 Ozone San Bernardino Mountains AQI: 115 Ozone San Bernardino Valley AQI: 118 Ozone San Gabriel Valley AQI: 115 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Warm conditions continue, with temperatures well above normal inland. Morning coastal low clouds are expected, followed by mostly sunny skies. Dry weather with only limited cloud coverage inland. Inversion Base: 486 FT | Breaking Temperature: 74 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2206 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: NO-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 FRIDAY, MARCH 27, 2026 IN THE SOUTH COAST AIR BASIN.