SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., APR. 23, 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 58 54 0.6 28 8 24 50 2 NW Coastal LA 56 50 0.4 25 6 21 46 3 SW Coastal LA 53 48 0.3 26 7 20 44 4 S Coastal LA 55 52 0.5 25 7 29 48 5 Southeast LA Co 55 53 0.5 26 9 30 50 6 W San Fernando Vly 58 55 0.4 22 5 18 51 7 E San Fernando Vly 62 59 0.5 27 6 21 64 8 W San Gabriel Vly 62 58 0.3 26 7 17 61 9 E San Gabriel Vly 65 57 0.4 25 6 15 58 10 Pomona Walnut Vly 60 54 0.4 30 9 24 50 11 S San Gabriel Vly 58 55 0.4 26 9 30 51 12 S Central LA Co 54 51 0.4 26 8 25 47 13 Santa Clarita Vly 64 57 0.3 21 5 13 58 15 San Gabriel Mts 60 56 0.3 29 5 19 54 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 60 56 0.3 14 7 17 54 Orange County: South Coast Air Basin 16 N Orange Co 57 55 0.2 27 9 16 51 17 Central Orange Co 46 45 0.3 21 9 21 50 18 N Coastal Orange Co 52 50 0.4 22 5 26 46 19 Saddleback Vly 53 51 0.2 26 5 20 47 20 Central Coastal 52 50 0.3 19 5 18 46 21 Capistrano Vly 52 50 0.3 21 5 13 46 Riverside County: South Coast Air Basin 22 Norco/Corona 63 56 0.3 34 8 21 54 23 Metro Riverside Co 67 58 0.3 36 9 21 61 24 Perris Vly 60 55 0.3 27 7 18 51 25 Lake Elsinore 55 53 0.3 17 6 11 49 26 Temecula Vly 51 49 0.2 26 7 10 45 27 Anza Vly 59 57 0.2 30 5 8 58 28 Hemet/San Jacinto 59 56 0.3 26 6 16 54 29 Banning 61 59 0.3 24 5 12 64 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 64 60 0.2 38 7 6 67 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 53 52 0.2 27 5 7 48 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 71 62 0.4 32 10 23 74 33 SW San Bernardino Vly 63 55 0.4 34 10 24 53 34 C San Bernardino Vly 68 61 0.4 24 8 25 71 35 E San Bernardino Vly 65 58 0.3 29 7 19 61 36 W San Bernardino Mtns 67 59 0.3 30 8 23 64 37 C San Bernardino Mtns 68 59 0.3 27 5 21 64 38 Big Bear Lake 62 57 0.3 26 6 17 58 San Bernardino County: Mojave Desert Air Basin 39 Phelan 54 51 0.3 26 5 21 47 40 Hesperia 58 53 0.3 27 6 21 49 41 Trona 56 52 0.2 17 5 11 48 42 Victorville 62 56 0.3 26 6 21 54 43 Yucca Vly 63 58 0.2 29 5 12 61 44 Barstow 63 55 0.3 20 5 25 51 45 Twentynine Palms 55 52 0.2 28 5 11 48 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., APR. 23, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 48 Ozone Inland Orange County AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 54 Ozone Banning Pass Area AQI: 64 Ozone Big Bear Lake AQI: 58 Ozone Central Mojave Desert AQI: 61 Ozone Coachella Valley/Low Desert AQI: 67 Ozone Hemet/Elsinore Area AQI: 54 Ozone Metropolitan Area AQI: 51 Ozone Northern Mojave Desert AQI: 51 Ozone Riverside Valley AQI: 61 Ozone San Bernardino Mountains AQI: 64 Ozone San Bernardino Valley AQI: 74 Ozone San Fernando/Santa Clarita Valleys AQI: 64 Ozone San Gabriel Mountains AQI: 54 Ozone San Gabriel Valley AQI: 61 Ozone Temecula/Anza Area AQI: 58 Ozone Victor Valley AQI: 54 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Partly cloudy becoming sunny with slightly warmer temperatures. Inversion Base: 3802 FT | Breaking Temperature: 70 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 4939 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, APRIL 23, 2026 IN THE SOUTH COAST AIR BASIN.