SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., APR. 25, 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 56 53 0.3 15 6 13 49 2 NW Coastal LA 54 51 0.3 15 5 8 47 3 SW Coastal LA 49 47 0.2 18 6 5 44 4 S Coastal LA 58 54 0.3 24 6 18 50 5 Southeast LA Co 55 52 0.3 24 7 16 48 6 W San Fernando Vly 57 52 0.3 15 5 7 48 7 E San Fernando Vly 61 56 0.3 16 5 11 54 8 W San Gabriel Vly 59 55 0.2 17 6 9 51 9 E San Gabriel Vly 58 53 0.3 16 4 13 49 10 Pomona Walnut Vly 54 49 0.2 27 5 11 45 11 S San Gabriel Vly 57 53 0.3 24 6 16 49 12 S Central LA Co 55 51 0.3 19 7 14 47 13 Santa Clarita Vly 55 51 0.2 16 7 9 47 15 San Gabriel Mts 57 52 0.3 27 6 11 48 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 58 55 0.2 18 6 7 51 Orange County: South Coast Air Basin 16 N Orange Co 55 52 0.1 27 6 11 48 17 Central Orange Co 51 48 0.3 27 6 6 44 18 N Coastal Orange Co 54 51 0.2 23 5 14 47 19 Saddleback Vly 51 48 0.2 24 4 8 44 20 Central Coastal 51 48 0.2 20 4 7 44 21 Capistrano Vly 49 47 0.2 29 4 4 44 Riverside County: South Coast Air Basin 22 Norco/Corona 56 52 0.3 26 7 7 48 23 Metro Riverside Co 62 56 0.6 25 8 8 54 24 Perris Vly 50 47 0.3 24 5 10 44 25 Lake Elsinore 51 49 0.2 12 5 3 45 26 Temecula Vly 46 44 0.2 48 6 5 44 27 Anza Vly 50 48 0.1 60 4 7 53 28 Hemet/San Jacinto 49 47 0.2 37 5 9 44 29 Banning 52 48 0.2 24 5 5 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 55 52 0.1 85 6 11 66 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 53 51 0.1 39 7 7 47 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 49 44 0.3 32 7 10 41 33 SW San Bernardino Vly 55 50 0.3 29 7 12 46 34 C San Bernardino Vly 58 53 0.4 22 6 14 49 35 E San Bernardino Vly 59 54 0.4 24 6 12 50 36 W San Bernardino Mtns 54 50 0.3 28 6 14 46 37 C San Bernardino Mtns 56 52 0.2 27 5 15 48 38 Big Bear Lake 53 50 0.2 28 4 11 46 San Bernardino County: Mojave Desert Air Basin 39 Phelan 51 48 0.2 26 5 15 44 40 Hesperia 56 53 0.2 28 6 16 49 41 Trona 54 50 0.2 34 6 22 46 42 Victorville 58 56 0.2 27 7 17 54 43 Yucca Vly 56 53 0.2 31 4 10 49 44 Barstow 62 58 0.2 26 6 12 61 45 Twentynine Palms 50 49 0.2 32 5 10 45 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., APR. 25, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 46 Ozone Central Mojave Desert AQI: 49 Ozone Coastal Area AQI: 50 Ozone Hemet/Elsinore Area AQI: 45 Ozone Inland Orange County AQI: 44 Ozone Metropolitan Area AQI: 49 Ozone San Bernardino Mountains AQI: 48 Ozone San Bernardino Valley AQI: 50 Ozone San Gabriel Mountains AQI: 48 Ozone MODERATE in the following area(s): Antelope Valley AQI: 51 Ozone Coachella Valley/Low Desert AQI: 66 PM10 Northern Mojave Desert AQI: 61 Ozone Riverside Valley AQI: 54 Ozone San Fernando/Santa Clarita Valleys AQI: 54 Ozone San Gabriel Valley AQI: 51 Ozone Temecula/Anza Area AQI: 53 PM10 Victor Valley AQI: 54 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly cloudy skies with cooler temperatures are expected. A slight chance of rain. Inversion Base: 4459 FT | Breaking Temperature: 73 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 4493 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 25, 2026 IN THE SOUTH COAST AIR BASIN.