SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., APR. 11, 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 50 45 0.4 15 5 18 42 2 NW Coastal LA 49 44 0.3 15 5 12 41 3 SW Coastal LA 42 39 0.2 17 5 8 36 4 S Coastal LA 49 45 0.2 20 5 15 42 5 Southeast LA Co 50 45 0.4 21 6 25 42 6 W San Fernando Vly 46 43 0.3 15 5 9 40 7 E San Fernando Vly 54 47 0.3 15 4 14 44 8 W San Gabriel Vly 54 47 0.2 17 5 11 44 9 E San Gabriel Vly 57 49 0.3 20 6 10 45 10 Pomona Walnut Vly 56 48 0.3 22 6 17 44 11 S San Gabriel Vly 51 46 0.4 21 6 17 43 12 S Central LA Co 49 44 0.3 17 6 25 41 13 Santa Clarita Vly 57 50 0.2 15 4 9 46 15 San Gabriel Mts 54 47 0.3 20 5 11 44 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 53 49 0.2 17 6 6 45 Orange County: South Coast Air Basin 16 N Orange Co 52 47 0.2 22 6 14 44 17 Central Orange Co 45 41 0.2 22 5 14 38 18 N Coastal Orange Co 47 43 0.2 20 4 14 40 19 Saddleback Vly 47 44 0.2 21 4 11 41 20 Central Coastal 45 43 0.2 18 4 9 40 21 Capistrano Vly 44 42 0.2 24 4 5 39 Riverside County: South Coast Air Basin 22 Norco/Corona 53 48 0.2 23 6 12 44 23 Metro Riverside Co 58 52 0.4 24 6 13 48 24 Perris Vly 43 41 0.3 22 5 11 38 25 Lake Elsinore 42 41 0.2 14 4 3 38 26 Temecula Vly 43 41 0.2 36 4 4 38 27 Anza Vly 47 45 0.2 44 3 5 42 28 Hemet/San Jacinto 45 44 0.2 30 4 10 41 29 Banning 49 45 0.2 21 4 7 42 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 54 52 0.1 59 4 6 53 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 49 46 0.1 34 4 5 43 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 49 43 0.3 19 6 11 40 33 SW San Bernardino Vly 53 47 0.3 23 6 15 44 34 C San Bernardino Vly 59 52 0.3 24 5 17 48 35 E San Bernardino Vly 56 51 0.3 23 5 12 47 36 W San Bernardino Mtns 52 47 0.3 19 5 14 44 37 C San Bernardino Mtns 57 51 0.2 23 3 15 47 38 Big Bear Lake 55 51 0.2 24 4 12 47 San Bernardino County: Mojave Desert Air Basin 39 Phelan 53 49 0.2 18 4 15 45 40 Hesperia 53 47 0.2 17 4 16 44 41 Trona 44 42 0.2 23 3 16 39 42 Victorville 57 48 0.2 18 5 17 44 43 Yucca Vly 54 52 0.2 30 3 9 48 44 Barstow 58 51 0.2 19 4 18 47 45 Twentynine Palms 51 49 0.2 31 3 8 45 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., APR. 11, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 45 Ozone Banning Pass Area AQI: 42 Ozone Big Bear Lake AQI: 47 Ozone Central Mojave Desert AQI: 48 Ozone Coastal Area AQI: 42 Ozone Hemet/Elsinore Area AQI: 41 Ozone Inland Orange County AQI: 41 Ozone Metropolitan Area AQI: 44 Ozone Northern Mojave Desert AQI: 47 Ozone Riverside Valley AQI: 48 Ozone San Bernardino Mountains AQI: 47 Ozone San Bernardino Valley AQI: 48 Ozone San Fernando/Santa Clarita Valleys AQI: 46 Ozone San Gabriel Mountains AQI: 44 Ozone San Gabriel Valley AQI: 45 Ozone Temecula/Anza Area AQI: 42 Ozone Victor Valley AQI: 45 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 53 PM10 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cooling and increasing onshore flow on Saturday. Strong gusty west winds for mountains and deserts. Chance of Showers Saturday morning in the basin and mountains. Inversion Base: 5339 FT | Breaking Temperature: 73 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 5376 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 SATURDAY, APRIL 11, 2026 IN THE SOUTH COAST AIR BASIN.