SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., APR. 01, 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 51 44 0.4 16 7 21 41 2 NW Coastal LA 47 43 0.3 14 6 12 40 3 SW Coastal LA 42 39 0.2 15 7 10 39 4 S Coastal LA 50 47 0.3 15 8 18 44 5 Southeast LA Co 48 44 0.4 16 9 18 50 6 W San Fernando Vly 50 47 0.3 13 6 8 44 7 E San Fernando Vly 58 50 0.3 15 6 15 46 8 W San Gabriel Vly 56 48 0.2 15 6 10 44 9 E San Gabriel Vly 58 50 0.3 12 6 15 46 10 Pomona Walnut Vly 57 48 0.3 19 8 19 44 11 S San Gabriel Vly 52 46 0.3 15 9 17 50 12 S Central LA Co 48 44 0.3 15 8 17 44 13 Santa Clarita Vly 56 53 0.2 13 7 14 49 15 San Gabriel Mts 56 50 0.2 18 6 13 46 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 55 51 0.2 13 8 7 47 Orange County: South Coast Air Basin 16 N Orange Co 52 47 0.1 16 9 12 50 17 Central Orange Co 39 36 0.3 16 8 10 44 18 N Coastal Orange Co 46 43 0.3 15 7 16 40 19 Saddleback Vly 50 45 0.2 16 7 10 42 20 Central Coastal 49 45 0.2 15 7 9 42 21 Capistrano Vly 51 46 0.2 35 7 6 43 Riverside County: South Coast Air Basin 22 Norco/Corona 55 50 0.2 18 8 11 46 23 Metro Riverside Co 59 54 0.4 18 9 11 50 24 Perris Vly 53 50 0.2 28 5 11 46 25 Lake Elsinore 52 47 0.2 12 5 4 44 26 Temecula Vly 45 43 0.2 63 6 5 55 27 Anza Vly 50 48 0.2 81 5 6 64 28 Hemet/San Jacinto 51 49 0.2 42 5 10 45 29 Banning 52 50 0.2 22 6 7 46 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 60 57 0.1 119 6 7 83 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 52 49 0.1 46 6 5 45 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 41 0.3 23 9 14 50 33 SW San Bernardino Vly 53 47 0.3 23 10 16 53 34 C San Bernardino Vly 59 53 0.2 36 6 19 49 35 E San Bernardino Vly 61 55 0.3 32 5 12 51 36 W San Bernardino Mtns 54 48 0.2 21 7 15 44 37 C San Bernardino Mtns 56 50 0.2 31 4 13 46 38 Big Bear Lake 60 55 0.2 27 5 11 51 San Bernardino County: Mojave Desert Air Basin 39 Phelan 61 55 0.2 12 5 11 51 40 Hesperia 60 54 0.2 11 6 12 50 41 Trona 48 46 0.1 12 5 11 43 42 Victorville 61 55 0.2 12 7 10 51 43 Yucca Vly 63 59 0.1 23 5 8 64 44 Barstow 60 56 0.2 13 5 9 54 45 Twentynine Palms 60 57 0.1 29 5 7 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., APR. 01, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 47 Ozone Banning Pass Area AQI: 46 Ozone Coastal Area AQI: 44 PM2.5 Hemet/Elsinore Area AQI: 46 Ozone Inland Orange County AQI: 44 PM2.5 Metropolitan Area AQI: 50 PM2.5 Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 46 Ozone San Fernando/Santa Clarita Valleys AQI: 49 Ozone San Gabriel Mountains AQI: 46 Ozone San Gabriel Valley AQI: 50 PM2.5 MODERATE in the following area(s): Big Bear Lake AQI: 51 Ozone Central Mojave Desert AQI: 64 Ozone Coachella Valley/Low Desert AQI: 83 PM10 Northern Mojave Desert AQI: 54 Ozone San Bernardino Valley AQI: 53 PM2.5 Temecula/Anza Area AQI: 64 PM10 Victor Valley AQI: 51 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly cloudy skies with cool temperatures are expected. Inversion Base: 11470 FT | Breaking Temperature: 92 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 4036 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 WEDNESDAY, APRIL 01, 2026 IN THE SOUTH COAST AIR BASIN.