SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., APR. 13, 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 45 40 0.5 12 7 18 39 2 NW Coastal LA 45 42 0.3 12 6 10 39 3 SW Coastal LA 43 41 0.3 13 6 8 38 4 S Coastal LA 44 42 0.3 16 8 18 44 5 Southeast LA Co 43 41 0.4 17 6 17 38 6 W San Fernando Vly 44 40 0.2 12 6 13 37 7 E San Fernando Vly 45 41 0.4 13 6 14 38 8 W San Gabriel Vly 46 41 0.3 16 6 9 38 9 E San Gabriel Vly 46 42 0.3 19 5 14 39 10 Pomona Walnut Vly 47 42 0.3 21 6 20 39 11 S San Gabriel Vly 45 40 0.3 18 6 15 37 12 S Central LA Co 43 41 0.3 14 7 17 39 13 Santa Clarita Vly 44 39 0.2 13 6 14 36 15 San Gabriel Mts 46 41 0.3 20 6 13 38 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 50 46 0.2 16 8 6 44 Orange County: South Coast Air Basin 16 N Orange Co 45 42 0.2 20 6 13 39 17 Central Orange Co 41 39 0.3 18 6 13 36 18 N Coastal Orange Co 43 41 0.3 16 6 16 38 19 Saddleback Vly 42 40 0.2 20 4 13 37 20 Central Coastal 42 40 0.2 14 4 11 37 21 Capistrano Vly 41 40 0.2 18 4 8 37 Riverside County: South Coast Air Basin 22 Norco/Corona 46 43 0.2 25 6 14 40 23 Metro Riverside Co 49 46 0.3 26 7 13 43 24 Perris Vly 44 41 0.3 21 6 10 38 25 Lake Elsinore 42 40 0.2 10 5 7 37 26 Temecula Vly 41 38 0.2 28 5 7 35 27 Anza Vly 42 41 0.2 34 5 7 38 28 Hemet/San Jacinto 43 40 0.2 28 5 8 37 29 Banning 44 40 0.2 27 4 7 37 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 52 46 0.2 60 11 8 55 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 44 42 0.2 33 7 7 39 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 44 0.3 21 5 12 41 33 SW San Bernardino Vly 47 43 0.3 25 6 17 40 34 C San Bernardino Vly 49 44 0.3 21 6 16 41 35 E San Bernardino Vly 49 44 0.3 24 6 10 41 36 W San Bernardino Mtns 48 45 0.3 20 5 12 42 37 C San Bernardino Mtns 50 46 0.3 21 5 10 43 38 Big Bear Lake 49 47 0.3 28 7 11 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 52 49 0.2 16 5 8 45 40 Hesperia 46 42 0.3 12 6 9 39 41 Trona 44 42 0.2 15 4 9 39 42 Victorville 48 45 0.2 14 6 7 42 43 Yucca Vly 46 45 0.2 39 8 10 44 44 Barstow 46 44 0.2 13 5 17 41 45 Twentynine Palms 48 46 0.2 37 8 10 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., APR. 13, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 44 PM2.5 Banning Pass Area AQI: 37 Ozone Big Bear Lake AQI: 44 Ozone Central Mojave Desert AQI: 44 PM2.5 Coastal Area AQI: 44 PM2.5 Hemet/Elsinore Area AQI: 38 Ozone Inland Orange County AQI: 37 Ozone Metropolitan Area AQI: 39 PM2.5 Northern Mojave Desert AQI: 41 Ozone Riverside Valley AQI: 43 Ozone San Bernardino Mountains AQI: 43 Ozone San Bernardino Valley AQI: 41 Ozone San Fernando/Santa Clarita Valleys AQI: 38 Ozone San Gabriel Mountains AQI: 38 Ozone San Gabriel Valley AQI: 39 Ozone Temecula/Anza Area AQI: 38 Ozone Victor Valley AQI: 45 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Scattered light to moderate showers are expected, with cool conditions. Breezy winds develop in the afternoon and evening, especially in the mountains and deserts. Inversion Base: 11393 FT | Breaking Temperature: 89 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 5384 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 MONDAY, APRIL 13, 2026 IN THE SOUTH COAST AIR BASIN.