SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., DEC. 07, 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 30 0.7 34 20 37 71 2 NW Coastal LA 42 36 0.9 31 28 27 86 3 SW Coastal LA 42 36 1.0 32 21 39 73 4 S Coastal LA 44 37 1.3 35 17 30 66 5 Southeast LA Co 42 33 1.8 36 24 35 79 6 W San Fernando Vly 40 36 1.3 28 19 39 69 7 E San Fernando Vly 40 34 1.1 33 16 38 64 8 W San Gabriel Vly 40 33 1.0 33 12 39 56 9 E San Gabriel Vly 45 37 0.6 25 11 29 55 10 Pomona Walnut Vly 42 34 1.0 38 22 36 75 11 S San Gabriel Vly 38 30 1.1 35 23 33 77 12 S Central LA Co 40 34 1.8 34 23 28 77 13 Santa Clarita Vly 43 36 0.4 30 9 20 50 15 San Gabriel Mts 41 36 0.8 33 9 35 50 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 37 31 0.7 29 13 27 58 Orange County: South Coast Air Basin 16 N Orange Co 49 36 0.6 42 27 28 84 17 Central Orange Co 45 34 1.1 37 24 36 79 18 N Coastal Orange Co 39 33 1.2 33 12 31 56 19 Saddleback Vly 53 43 0.6 42 10 32 53 20 Central Coastal 47 38 0.7 29 10 27 53 21 Capistrano Vly 54 44 0.6 23 10 23 53 Riverside County: South Coast Air Basin 22 Norco/Corona 49 40 1.1 53 34 33 97 23 Metro Riverside Co 46 37 1.2 61 34 38 97 24 Perris Vly 45 38 1.0 36 21 36 73 25 Lake Elsinore 53 46 0.6 30 21 21 73 26 Temecula Vly 45 42 0.5 21 8 21 44 27 Anza Vly 42 39 0.5 22 8 21 44 28 Hemet/San Jacinto 46 42 0.9 24 8 33 44 29 Banning 45 42 0.9 22 11 28 55 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 44 40 0.4 36 8 22 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 33 30 0.4 22 8 19 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 54 45 0.8 21 14 38 60 33 SW San Bernardino Vly 44 35 1.1 53 28 38 86 34 C San Bernardino Vly 45 37 1.2 28 15 40 62 35 E San Bernardino Vly 42 36 1.1 36 13 36 58 36 W San Bernardino Mtns 46 39 1.0 26 8 37 44 37 C San Bernardino Mtns 44 37 1.2 28 11 37 55 38 Big Bear Lake 45 41 1.1 25 13 34 58 San Bernardino County: Mojave Desert Air Basin 39 Phelan 43 41 0.9 27 8 33 44 40 Hesperia 37 32 1.0 28 11 36 55 41 Trona 30 23 0.5 18 8 15 44 42 Victorville 40 33 0.9 28 13 33 58 43 Yucca Vly 47 43 0.6 25 8 25 44 44 Barstow 34 24 0.7 18 8 36 44 45 Twentynine Palms 39 35 0.5 24 8 24 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., DEC. 07, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Central Mojave Desert AQI: 44 PM2.5 Coachella Valley/Low Desert AQI: 44 PM2.5 Northern Mojave Desert AQI: 44 PM2.5 San Gabriel Mountains AQI: 50 PM2.5 Temecula/Anza Area AQI: 44 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 58 PM2.5 Banning Pass Area AQI: 55 PM2.5 Big Bear Lake AQI: 58 PM2.5 Coastal Area AQI: 86 PM2.5 Hemet/Elsinore Area AQI: 73 PM2.5 Inland Orange County AQI: 79 PM2.5 Metropolitan Area AQI: 84 PM2.5 Riverside Valley AQI: 97 PM2.5 San Bernardino Mountains AQI: 55 PM2.5 San Bernardino Valley AQI: 86 PM2.5 San Fernando/Santa Clarita Valleys AQI: 69 PM2.5 San Gabriel Valley AQI: 77 PM2.5 Victor Valley AQI: 58 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Weak onshore flow on Sunday morning turning offshore through Sunday. Gradual warming on Sunday. Inversion Base: 486 FT | Breaking Temperature: 65 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1897 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: Prohibited in South Coast Air Basin Below 3000 ft 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 SUNDAY, DECEMBER 07, 2025 IN THE SOUTH COAST AIR BASIN.