SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., NOV. 28, 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 40 30 0.8 37 27 41 84 2 NW Coastal LA 37 29 0.8 34 24 31 79 3 SW Coastal LA 45 33 0.8 36 16 33 64 4 S Coastal LA 41 35 0.8 36 16 41 64 5 Southeast LA Co 41 31 1.3 37 29 46 88 6 W San Fernando Vly 44 37 1.1 29 23 30 77 7 E San Fernando Vly 39 31 1.0 36 24 41 79 8 W San Gabriel Vly 48 35 0.7 36 26 42 82 9 E San Gabriel Vly 39 30 0.8 38 30 43 90 10 Pomona Walnut Vly 50 35 0.9 39 31 45 92 11 S San Gabriel Vly 43 31 1.0 41 33 46 96 12 S Central LA Co 39 32 1.3 37 21 34 73 13 Santa Clarita Vly 47 39 0.6 27 19 28 69 15 San Gabriel Mts 43 36 0.9 33 21 43 73 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 44 40 0.8 25 16 26 64 Orange County: South Coast Air Basin 16 N Orange Co 41 31 0.7 42 30 34 90 17 Central Orange Co 41 34 0.7 36 27 29 84 18 N Coastal Orange Co 47 40 0.8 34 13 37 58 19 Saddleback Vly 49 44 0.5 42 12 32 56 20 Central Coastal 50 43 0.6 30 16 30 64 21 Capistrano Vly 51 45 0.6 25 14 27 60 Riverside County: South Coast Air Basin 22 Norco/Corona 52 42 0.9 53 33 35 96 23 Metro Riverside Co 50 37 1.0 59 38 36 107 24 Perris Vly 53 43 1.0 38 29 40 88 25 Lake Elsinore 53 47 0.6 28 22 27 75 26 Temecula Vly 51 44 0.5 23 10 26 53 27 Anza Vly 53 49 0.4 25 10 28 53 28 Hemet/San Jacinto 53 47 0.9 29 18 40 68 29 Banning 51 46 0.9 29 21 39 73 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 50 47 0.3 34 17 29 66 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 40 35 0.4 24 10 24 53 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 36 0.8 32 25 44 81 33 SW San Bernardino Vly 48 35 1.0 52 33 48 96 34 C San Bernardino Vly 38 31 1.2 33 26 54 82 35 E San Bernardino Vly 45 38 1.1 41 26 42 82 36 W San Bernardino Mtns 42 35 1.1 29 19 46 69 37 C San Bernardino Mtns 50 44 1.2 31 15 44 62 38 Big Bear Lake 48 45 1.1 29 22 42 75 San Bernardino County: Mojave Desert Air Basin 39 Phelan 48 47 0.9 24 10 38 53 40 Hesperia 42 37 1.0 23 15 41 62 41 Trona 35 30 0.5 17 10 18 53 42 Victorville 46 40 0.9 23 14 35 60 43 Yucca Vly 55 50 0.6 27 10 31 53 44 Barstow 40 30 0.7 26 11 40 55 45 Twentynine Palms 47 43 0.5 27 10 29 53 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., NOV. 28, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 64 PM2.5 Banning Pass Area AQI: 73 PM2.5 Big Bear Lake AQI: 75 PM2.5 Central Mojave Desert AQI: 53 PM2.5 Coachella Valley/Low Desert AQI: 66 PM2.5 Coastal Area AQI: 79 PM2.5 Hemet/Elsinore Area AQI: 88 PM2.5 Inland Orange County AQI: 84 PM2.5 Metropolitan Area AQI: 90 PM2.5 Northern Mojave Desert AQI: 55 PM2.5 San Bernardino Mountains AQI: 69 PM2.5 San Bernardino Valley AQI: 96 PM2.5 San Fernando/Santa Clarita Valleys AQI: 79 PM2.5 San Gabriel Mountains AQI: 73 PM2.5 San Gabriel Valley AQI: 96 PM2.5 Temecula/Anza Area AQI: 53 PM2.5 Victor Valley AQI: 62 PM2.5 UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Riverside Valley AQI: 107 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cooling continues with highs about 5° lower than Thursday. Offshore winds weaken, becoming light and more localized. High clouds persist, and coastal areas may see patchy low clouds or fog overnight. Inversion Base: 486 FT | Breaking Temperature: 65 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1726 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 FRIDAY, NOVEMBER 28, 2025 IN THE SOUTH COAST AIR BASIN.