SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., FEB. 25, 2026 -------------------------------------------------------------------------------- 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 53 45 0.6 29 17 35 66 2 NW Coastal LA 53 42 0.8 26 19 25 69 3 SW Coastal LA 50 42 0.7 27 13 32 58 4 S Coastal LA 51 46 0.5 27 13 35 58 5 Southeast LA Co 54 48 0.7 28 20 37 71 6 W San Fernando Vly 50 42 0.7 23 11 26 55 7 E San Fernando Vly 48 41 0.7 28 13 34 58 8 W San Gabriel Vly 58 48 0.7 27 13 34 58 9 E San Gabriel Vly 62 50 0.7 22 12 38 56 10 Pomona Walnut Vly 63 50 0.7 29 22 37 75 11 S San Gabriel Vly 57 49 0.7 28 22 37 75 12 S Central LA Co 52 47 0.6 28 17 23 66 13 Santa Clarita Vly 50 42 0.4 22 9 28 50 15 San Gabriel Mts 49 42 0.6 26 7 34 39 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 46 44 0.5 16 10 22 53 Orange County: South Coast Air Basin 16 N Orange Co 54 46 0.6 32 20 26 71 17 Central Orange Co 52 44 0.6 27 17 23 66 18 N Coastal Orange Co 50 42 0.5 25 8 31 44 19 Saddleback Vly 54 47 0.3 32 8 26 44 20 Central Coastal 50 45 0.4 23 7 24 42 21 Capistrano Vly 50 46 0.4 23 6 22 43 Riverside County: South Coast Air Basin 22 Norco/Corona 63 52 0.7 42 19 29 69 23 Metro Riverside Co 67 55 0.7 47 24 37 79 24 Perris Vly 57 50 0.7 30 17 34 66 25 Lake Elsinore 50 45 0.4 19 9 22 50 26 Temecula Vly 48 42 0.4 29 5 20 39 27 Anza Vly 47 44 0.3 33 5 17 41 28 Hemet/San Jacinto 53 47 0.6 27 8 30 44 29 Banning 53 47 0.6 24 7 23 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 59 51 0.2 41 14 14 60 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 43 0.2 26 7 14 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 71 57 0.6 23 17 37 66 33 SW San Bernardino Vly 64 51 0.7 41 24 36 79 34 C San Bernardino Vly 58 49 0.8 22 16 36 64 35 E San Bernardino Vly 56 48 0.8 31 12 35 56 36 W San Bernardino Mtns 63 52 0.7 22 11 34 55 37 C San Bernardino Mtns 59 48 0.8 25 7 34 44 38 Big Bear Lake 52 48 0.7 28 13 32 58 San Bernardino County: Mojave Desert Air Basin 39 Phelan 41 39 0.6 23 5 30 36 40 Hesperia 48 43 0.7 25 6 32 40 41 Trona 44 39 0.3 15 5 12 36 42 Victorville 46 42 0.6 26 7 29 39 43 Yucca Vly 51 46 0.4 28 6 22 43 44 Barstow 46 43 0.5 32 7 41 40 45 Twentynine Palms 46 42 0.3 27 6 20 39 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., FEB. 25, 2026, 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 Central Mojave Desert AQI: 43 Ozone Northern Mojave Desert AQI: 40 Ozone San Gabriel Mountains AQI: 39 PM2.5 Temecula/Anza Area AQI: 41 Ozone Victor Valley AQI: 40 Ozone MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Big Bear Lake AQI: 58 PM2.5 Coachella Valley/Low Desert AQI: 60 PM2.5 Coastal Area AQI: 69 PM2.5 Hemet/Elsinore Area AQI: 66 PM2.5 Inland Orange County AQI: 66 PM2.5 Metropolitan Area AQI: 71 PM2.5 Riverside Valley AQI: 79 PM2.5 San Bernardino Mountains AQI: 55 PM2.5 San Bernardino Valley AQI: 79 PM2.5 San Fernando/Santa Clarita Valleys AQI: 58 PM2.5 San Gabriel Valley AQI: 75 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ A warming trend is forecast to continue Wednesday. Coastal marine layer clouds and fog are possible during morning and nighttime hours; otherwise, Wednesday is expected to be mostly sunny. Inversion Base: 486 FT | Breaking Temperature: 71 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2102 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 Above 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 WEDNESDAY, FEBRUARY 25, 2026 IN THE SOUTH COAST AIR BASIN.