SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., NOV. 19, 2025 -------------------------------------------------------------------------------- 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 36 33 0.6 23 13 31 58 2 NW Coastal LA 40 35 0.5 21 12 21 56 3 SW Coastal LA 37 34 0.7 22 7 25 39 4 S Coastal LA 40 36 0.9 21 7 38 39 5 Southeast LA Co 36 32 1.7 22 11 35 55 6 W San Fernando Vly 41 37 1.0 19 11 24 55 7 E San Fernando Vly 39 36 0.8 22 12 28 56 8 W San Gabriel Vly 36 34 0.6 22 11 25 55 9 E San Gabriel Vly 36 33 0.4 14 10 30 53 10 Pomona Walnut Vly 36 33 0.8 27 13 31 58 11 S San Gabriel Vly 34 32 0.7 22 13 31 58 12 S Central LA Co 38 33 1.7 22 8 32 44 13 Santa Clarita Vly 44 39 0.4 20 8 19 44 15 San Gabriel Mts 39 36 0.6 24 8 27 44 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 40 38 0.5 18 7 30 39 Orange County: South Coast Air Basin 16 N Orange Co 36 34 0.6 26 12 27 56 17 Central Orange Co 33 31 0.8 21 11 29 55 18 N Coastal Orange Co 41 37 0.8 20 3 35 34 19 Saddleback Vly 43 41 0.3 26 3 28 38 20 Central Coastal 42 39 0.5 17 3 26 36 21 Capistrano Vly 43 41 0.5 14 3 22 38 Riverside County: South Coast Air Basin 22 Norco/Corona 42 38 0.9 34 11 30 55 23 Metro Riverside Co 39 36 0.9 37 14 30 60 24 Perris Vly 37 35 0.8 20 11 32 55 25 Lake Elsinore 45 42 0.5 12 9 20 50 26 Temecula Vly 40 38 0.4 13 4 19 35 27 Anza Vly 43 41 0.4 15 5 19 38 28 Hemet/San Jacinto 42 39 0.7 18 8 32 44 29 Banning 44 41 0.7 16 10 32 53 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 45 43 0.3 39 9 18 50 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 41 39 0.3 20 3 16 36 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 30 28 0.5 31 11 31 55 33 SW San Bernardino Vly 37 34 0.9 34 13 32 58 34 C San Bernardino Vly 35 31 0.9 21 11 34 55 35 E San Bernardino Vly 37 33 0.8 20 11 33 55 36 W San Bernardino Mtns 34 31 0.7 24 7 31 39 37 C San Bernardino Mtns 41 38 0.9 20 7 33 39 38 Big Bear Lake 43 42 0.8 19 8 33 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 45 44 0.7 17 5 26 41 40 Hesperia 38 35 0.7 14 8 30 44 41 Trona 36 33 0.4 10 3 15 31 42 Victorville 40 39 0.7 16 11 26 55 43 Yucca Vly 44 42 0.5 25 4 23 39 44 Barstow 41 38 0.5 14 5 34 35 45 Twentynine Palms 40 39 0.4 24 4 21 36 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., NOV. 19, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 39 PM2.5 Big Bear Lake AQI: 44 PM2.5 Central Mojave Desert AQI: 39 Ozone Coachella Valley/Low Desert AQI: 50 PM2.5 Northern Mojave Desert AQI: 35 Ozone San Bernardino Mountains AQI: 39 PM2.5 San Gabriel Mountains AQI: 44 PM2.5 Temecula/Anza Area AQI: 38 Ozone MODERATE in the following area(s): Banning Pass Area AQI: 53 PM2.5 Coastal Area AQI: 56 PM2.5 Hemet/Elsinore Area AQI: 55 PM2.5 Inland Orange County AQI: 55 PM2.5 Metropolitan Area AQI: 58 PM2.5 Riverside Valley AQI: 60 PM2.5 San Bernardino Valley AQI: 58 PM2.5 San Fernando/Santa Clarita Valleys AQI: 56 PM2.5 San Gabriel Valley AQI: 58 PM2.5 Victor Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Wednesday is expected to be drier and slightly warmer than recent days, though there is still a chance of showers in the mountains. Inversion Base: 486 FT | Breaking Temperature: 56 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2813 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: NO-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 Below 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, NOVEMBER 19, 2025 IN THE SOUTH COAST AIR BASIN.