SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., DEC. 06, 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 35 28 0.8 38 21 41 73 2 NW Coastal LA 41 36 0.9 34 23 29 77 3 SW Coastal LA 39 33 1.1 35 17 40 66 4 S Coastal LA 33 29 1.4 34 20 39 71 5 Southeast LA Co 33 26 1.4 37 25 40 81 6 W San Fernando Vly 39 34 1.1 30 24 35 79 7 E San Fernando Vly 37 32 1.0 37 22 39 75 8 W San Gabriel Vly 34 28 0.8 36 21 39 73 9 E San Gabriel Vly 38 31 0.7 26 17 34 66 10 Pomona Walnut Vly 37 29 0.9 36 24 41 79 11 S San Gabriel Vly 34 26 1.1 37 24 39 79 12 S Central LA Co 32 27 1.4 36 22 37 75 13 Santa Clarita Vly 43 37 0.5 31 15 21 62 15 San Gabriel Mts 39 34 0.8 35 17 36 66 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 39 36 0.6 28 15 20 62 Orange County: South Coast Air Basin 16 N Orange Co 35 27 0.7 40 26 33 82 17 Central Orange Co 37 30 0.9 32 25 34 81 18 N Coastal Orange Co 39 35 1.2 31 21 37 73 19 Saddleback Vly 45 40 0.5 40 15 34 62 20 Central Coastal 44 40 0.7 26 19 31 69 21 Capistrano Vly 48 44 0.6 22 17 28 66 Riverside County: South Coast Air Basin 22 Norco/Corona 43 36 1.0 52 30 37 90 23 Metro Riverside Co 41 31 1.0 59 34 38 97 24 Perris Vly 45 36 0.8 37 26 38 82 25 Lake Elsinore 51 44 0.6 21 19 27 69 26 Temecula Vly 47 43 0.5 23 11 26 55 27 Anza Vly 48 44 0.4 26 9 26 50 28 Hemet/San Jacinto 47 42 0.7 25 16 37 64 29 Banning 46 42 0.7 22 15 34 62 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 41 0.3 36 8 27 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 34 31 0.3 23 9 22 50 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 39 0.9 23 18 35 68 33 SW San Bernardino Vly 40 31 1.0 51 28 43 86 34 C San Bernardino Vly 40 33 0.9 29 21 49 73 35 E San Bernardino Vly 41 35 0.9 39 20 40 71 36 W San Bernardino Mtns 44 37 0.8 26 13 40 58 37 C San Bernardino Mtns 47 40 0.9 28 10 41 53 38 Big Bear Lake 46 42 0.8 25 14 38 60 San Bernardino County: Mojave Desert Air Basin 39 Phelan 44 41 0.8 25 9 34 50 40 Hesperia 40 35 0.8 24 11 38 55 41 Trona 25 23 0.4 23 9 16 50 42 Victorville 42 36 0.7 26 12 34 56 43 Yucca Vly 50 44 0.5 26 9 30 50 44 Barstow 39 27 0.6 27 9 40 50 45 Twentynine Palms 39 36 0.4 26 9 28 50 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., DEC. 06, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Central Mojave Desert AQI: 50 PM2.5 Coachella Valley/Low Desert AQI: 50 PM2.5 Northern Mojave Desert AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 62 PM2.5 Banning Pass Area AQI: 62 PM2.5 Big Bear Lake AQI: 60 PM2.5 Coastal Area AQI: 77 PM2.5 Hemet/Elsinore Area AQI: 82 PM2.5 Inland Orange County AQI: 81 PM2.5 Metropolitan Area AQI: 82 PM2.5 Riverside Valley AQI: 97 PM2.5 San Bernardino Mountains AQI: 58 PM2.5 San Bernardino Valley AQI: 86 PM2.5 San Fernando/Santa Clarita Valleys AQI: 79 PM2.5 San Gabriel Mountains AQI: 66 PM2.5 San Gabriel Valley AQI: 79 PM2.5 Temecula/Anza Area AQI: 55 PM2.5 Victor Valley AQI: 56 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Weak onshore flow on Saturday. Fog in coastal areas returning on Sunday. Inversion Base: 486 FT | Breaking Temperature: 61 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1698 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 SATURDAY, DECEMBER 06, 2025 IN THE SOUTH COAST AIR BASIN.