SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., NOV. 08, 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 51 41 1.0 52 24 38 79 2 NW Coastal LA 53 47 0.8 45 19 32 69 3 SW Coastal LA 52 44 0.6 48 17 36 66 4 S Coastal LA 51 44 0.6 45 17 42 66 5 Southeast LA Co 56 45 0.9 49 26 36 82 6 W San Fernando Vly 53 47 1.0 40 17 33 66 7 E San Fernando Vly 50 43 0.9 50 17 37 66 8 W San Gabriel Vly 62 47 0.7 49 17 37 66 9 E San Gabriel Vly 62 49 0.8 38 16 41 64 10 Pomona Walnut Vly 62 48 0.9 41 20 45 71 11 S San Gabriel Vly 59 44 0.8 49 26 31 82 12 S Central LA Co 53 46 0.7 48 21 30 73 13 Santa Clarita Vly 53 48 0.4 39 12 23 56 15 San Gabriel Mts 52 45 0.7 46 13 39 58 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 42 39 0.6 29 13 34 58 Orange County: South Coast Air Basin 16 N Orange Co 63 49 0.6 44 24 25 79 17 Central Orange Co 59 50 0.6 39 22 32 75 18 N Coastal Orange Co 58 54 0.6 39 10 38 53 19 Saddleback Vly 62 54 0.4 44 11 35 55 20 Central Coastal 62 56 0.5 35 17 30 66 21 Capistrano Vly 65 60 0.6 33 21 27 73 Riverside County: South Coast Air Basin 22 Norco/Corona 66 55 0.8 51 20 39 71 23 Metro Riverside Co 63 51 1.1 57 22 50 75 24 Perris Vly 51 48 0.9 43 16 45 64 25 Lake Elsinore 67 60 0.6 33 17 26 67 26 Temecula Vly 51 47 0.5 32 6 24 44 27 Anza Vly 44 42 0.4 29 6 23 39 28 Hemet/San Jacinto 50 48 0.8 39 7 42 44 29 Banning 52 48 0.7 34 7 40 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 48 45 0.3 36 20 22 71 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 41 38 0.3 25 10 18 53 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 63 51 0.8 29 13 46 58 33 SW San Bernardino Vly 62 50 0.8 51 20 48 71 34 C San Bernardino Vly 51 44 0.9 49 12 52 56 35 E San Bernardino Vly 54 48 1.0 46 9 47 50 36 W San Bernardino Mtns 51 44 0.8 34 7 46 43 37 C San Bernardino Mtns 44 39 0.9 46 6 44 43 38 Big Bear Lake 47 44 0.8 40 11 43 55 San Bernardino County: Mojave Desert Air Basin 39 Phelan 45 42 0.7 31 7 39 39 40 Hesperia 40 36 0.8 31 7 43 41 41 Trona 42 34 0.4 18 6 13 33 42 Victorville 43 39 0.7 31 9 38 50 43 Yucca Vly 44 42 0.4 27 11 29 55 44 Barstow 43 36 0.6 23 7 47 44 45 Twentynine Palms 42 39 0.4 27 11 26 55 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., NOV. 08, 2025, 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 Northern Mojave Desert AQI: 44 NO2 San Bernardino Mountains AQI: 43 NO2 Temecula/Anza Area AQI: 44 Ozone Victor Valley AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 58 PM2.5 Big Bear Lake AQI: 55 PM2.5 Central Mojave Desert AQI: 55 PM2.5 Coachella Valley/Low Desert AQI: 71 PM2.5 Coastal Area AQI: 69 PM2.5 Hemet/Elsinore Area AQI: 67 Ozone Inland Orange County AQI: 75 PM2.5 Metropolitan Area AQI: 82 PM2.5 Riverside Valley AQI: 75 PM2.5 San Bernardino Valley AQI: 71 PM2.5 San Fernando/Santa Clarita Valleys AQI: 66 PM2.5 San Gabriel Mountains AQI: 58 PM2.5 San Gabriel Valley AQI: 82 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ The ridge of high pressure that started building over the west coast will strengthen on Saturday, bringing 1-4 degrees of warming compared to Friday. Since this is the start of a mild Santa Ana event, winds will be generally light offshore, with afternoon gusts in the Inland Empire and deserts reaching 25 mph. Coastal areas will start off cloudy before becoming mostly sunny like everywhere else. Inversion Base: 486 FT | Breaking Temperature: 73 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2374 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 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 SATURDAY, NOVEMBER 08, 2025 IN THE SOUTH COAST AIR BASIN.