SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., APR. 10, 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 46 39 0.6 18 8 22 44 2 NW Coastal LA 44 40 0.3 18 7 21 39 3 SW Coastal LA 39 35 0.2 19 6 11 33 4 S Coastal LA 44 39 0.3 22 7 22 39 5 Southeast LA Co 46 40 0.4 22 8 25 44 6 W San Fernando Vly 43 40 0.3 18 7 11 39 7 E San Fernando Vly 48 41 0.4 18 7 19 39 8 W San Gabriel Vly 50 41 0.2 19 7 15 39 9 E San Gabriel Vly 56 49 0.4 15 7 18 45 10 Pomona Walnut Vly 49 44 0.3 22 8 22 44 11 S San Gabriel Vly 48 41 0.3 21 8 25 44 12 S Central LA Co 47 40 0.4 20 8 24 44 13 Santa Clarita Vly 52 46 0.2 19 7 12 43 15 San Gabriel Mts 51 44 0.4 20 7 15 41 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 54 50 0.2 21 8 12 46 Orange County: South Coast Air Basin 16 N Orange Co 49 43 0.2 23 7 17 40 17 Central Orange Co 37 33 0.4 23 6 23 33 18 N Coastal Orange Co 44 40 0.3 21 5 21 37 19 Saddleback Vly 45 43 0.2 23 5 18 40 20 Central Coastal 45 42 0.2 19 5 15 39 21 Capistrano Vly 43 41 0.2 21 4 11 38 Riverside County: South Coast Air Basin 22 Norco/Corona 48 43 0.3 26 8 17 44 23 Metro Riverside Co 51 45 0.3 28 10 14 53 24 Perris Vly 42 40 0.3 24 6 16 37 25 Lake Elsinore 40 37 0.2 14 6 9 34 26 Temecula Vly 40 37 0.2 30 7 8 39 27 Anza Vly 43 40 0.1 36 4 7 37 28 Hemet/San Jacinto 45 42 0.2 29 6 16 39 29 Banning 53 47 0.2 28 5 14 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 53 50 0.1 60 4 5 53 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 44 0.1 30 4 5 41 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 42 0.4 19 8 16 44 33 SW San Bernardino Vly 47 43 0.3 26 9 21 50 34 C San Bernardino Vly 57 48 0.3 24 7 20 44 35 E San Bernardino Vly 53 46 0.3 26 7 18 43 36 W San Bernardino Mtns 50 45 0.3 23 7 17 42 37 C San Bernardino Mtns 61 50 0.3 26 5 19 46 38 Big Bear Lake 55 50 0.2 29 4 17 46 San Bernardino County: Mojave Desert Air Basin 39 Phelan 48 45 0.3 25 5 14 42 40 Hesperia 50 45 0.3 27 6 17 42 41 Trona 50 43 0.2 41 4 80 79 42 Victorville 51 46 0.2 26 6 14 43 43 Yucca Vly 51 49 0.2 32 4 7 45 44 Barstow 54 50 0.2 23 5 11 46 45 Twentynine Palms 48 46 0.2 31 4 7 43 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., APR. 10, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 46 Ozone Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 46 Ozone Central Mojave Desert AQI: 45 Ozone Coastal Area AQI: 39 PM2.5 Hemet/Elsinore Area AQI: 39 Ozone Inland Orange County AQI: 40 Ozone Metropolitan Area AQI: 44 PM2.5 San Bernardino Mountains AQI: 46 Ozone San Bernardino Valley AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 43 Ozone San Gabriel Mountains AQI: 41 Ozone San Gabriel Valley AQI: 45 Ozone Temecula/Anza Area AQI: 39 PM2.5 Victor Valley AQI: 43 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 53 PM10 Northern Mojave Desert AQI: 79 NO2 Riverside Valley AQI: 53 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cooling temperatures and increasing onshore winds and ventilation. Gusty winds in the deserts and chance of showers late Friday. Inversion Base: 2317 FT | Breaking Temperature: 69 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2960 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 Above 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, APRIL 10, 2026 IN THE SOUTH COAST AIR BASIN.