SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., NOV. 24, 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 38 30 0.7 28 18 34 68 2 NW Coastal LA 37 33 0.6 26 24 24 79 3 SW Coastal LA 38 33 0.8 27 16 30 64 4 S Coastal LA 43 33 1.3 31 12 33 56 5 Southeast LA Co 41 31 1.5 32 21 34 73 6 W San Fernando Vly 41 35 1.2 23 19 35 69 7 E San Fernando Vly 39 31 1.0 28 15 32 62 8 W San Gabriel Vly 47 37 0.7 27 12 31 56 9 E San Gabriel Vly 46 37 0.5 20 15 25 62 10 Pomona Walnut Vly 44 35 0.9 32 23 41 77 11 S San Gabriel Vly 42 31 1.0 31 23 34 77 12 S Central LA Co 40 31 1.5 29 17 30 66 13 Santa Clarita Vly 39 34 0.5 24 13 22 58 15 San Gabriel Mts 40 33 0.7 26 9 32 50 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 39 34 0.6 22 10 27 53 Orange County: South Coast Air Basin 16 N Orange Co 43 34 0.7 35 23 29 77 17 Central Orange Co 38 31 1.0 34 19 33 69 18 N Coastal Orange Co 43 36 1.2 30 7 32 39 19 Saddleback Vly 46 40 0.5 35 7 32 39 20 Central Coastal 44 39 0.7 26 7 29 39 21 Capistrano Vly 45 41 0.5 20 8 28 44 Riverside County: South Coast Air Basin 22 Norco/Corona 49 40 0.9 42 24 33 79 23 Metro Riverside Co 51 41 1.0 47 25 33 81 24 Perris Vly 47 42 0.8 30 18 35 68 25 Lake Elsinore 47 42 0.5 17 14 28 60 26 Temecula Vly 44 40 0.5 17 8 26 44 27 Anza Vly 41 38 0.5 18 7 24 39 28 Hemet/San Jacinto 47 43 0.7 21 12 34 56 29 Banning 48 43 0.7 20 10 33 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 47 41 0.5 31 9 24 50 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 35 32 0.5 18 7 18 39 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 42 34 0.8 17 15 33 62 33 SW San Bernardino Vly 44 35 0.9 41 24 42 79 34 C San Bernardino Vly 39 33 0.8 21 14 50 60 35 E San Bernardino Vly 42 37 0.8 32 12 35 56 36 W San Bernardino Mtns 39 33 0.7 20 7 39 39 37 C San Bernardino Mtns 43 38 0.8 21 9 39 50 38 Big Bear Lake 44 41 0.7 22 7 35 39 San Bernardino County: Mojave Desert Air Basin 39 Phelan 44 43 0.7 20 7 35 40 40 Hesperia 39 35 0.7 19 8 37 44 41 Trona 34 27 0.5 11 7 12 39 42 Victorville 40 36 0.7 20 9 35 50 43 Yucca Vly 45 44 0.6 24 7 26 41 44 Barstow 38 33 0.6 21 9 36 50 45 Twentynine Palms 42 39 0.5 23 7 24 39 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., NOV. 24, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Big Bear Lake AQI: 39 PM2.5 Central Mojave Desert AQI: 41 Ozone Coachella Valley/Low Desert AQI: 50 PM2.5 Northern Mojave Desert AQI: 50 PM2.5 San Bernardino Mountains AQI: 50 PM2.5 San Gabriel Mountains AQI: 50 PM2.5 Temecula/Anza Area AQI: 44 PM2.5 Victor Valley AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Banning Pass Area AQI: 53 PM2.5 Coastal Area AQI: 79 PM2.5 Hemet/Elsinore Area AQI: 68 PM2.5 Inland Orange County AQI: 69 PM2.5 Metropolitan Area AQI: 77 PM2.5 Riverside Valley AQI: 81 PM2.5 San Bernardino Valley AQI: 79 PM2.5 San Fernando/Santa Clarita Valleys AQI: 69 PM2.5 San Gabriel Valley AQI: 77 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ A slight cooling is expected in coastal areas while a gradual warming trend is expected elsewhere. Dry conditions are expected Monday with morning clouds possible in the LA Basin. Inversion Base: 486 FT | Breaking Temperature: 62 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1531 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 MONDAY, NOVEMBER 24, 2025 IN THE SOUTH COAST AIR BASIN.