SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., AUG. 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 89 71 0.8 43 13 31 101 2 NW Coastal LA 64 52 0.4 40 13 22 58 3 SW Coastal LA 53 41 0.2 40 11 25 55 4 S Coastal LA 60 47 0.3 38 9 27 50 5 Southeast LA Co 71 59 0.6 40 11 26 64 6 W San Fernando Vly 81 68 0.4 38 9 21 93 7 E San Fernando Vly 85 72 0.6 42 12 26 105 8 W San Gabriel Vly 99 83 0.4 42 12 22 143 9 E San Gabriel Vly 102 93 0.6 36 11 30 169 10 Pomona Walnut Vly 103 88 0.6 41 13 37 156 11 S San Gabriel Vly 84 71 0.4 41 12 22 101 12 S Central LA Co 67 53 0.3 40 10 19 53 13 Santa Clarita Vly 81 69 0.3 40 9 25 97 15 San Gabriel Mts 84 74 0.4 42 9 34 112 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 75 62 0.3 40 11 22 74 Orange County: South Coast Air Basin 16 N Orange Co 72 65 0.2 44 11 13 84 17 Central Orange Co 61 53 0.3 29 10 11 53 18 N Coastal Orange Co 48 47 0.3 32 6 23 44 19 Saddleback Vly 61 60 0.3 44 6 22 67 20 Central Coastal 54 52 0.3 32 6 21 48 21 Capistrano Vly 56 55 0.3 34 7 24 51 Riverside County: South Coast Air Basin 22 Norco/Corona 94 78 0.4 59 11 27 126 23 Metro Riverside Co 102 85 0.4 67 14 32 150 24 Perris Vly 85 73 0.4 45 11 32 108 25 Lake Elsinore 74 69 0.3 34 10 24 97 26 Temecula Vly 57 56 0.3 36 9 21 54 27 Anza Vly 61 58 0.3 38 6 16 61 28 Hemet/San Jacinto 73 67 0.4 40 9 30 90 29 Banning 81 71 0.4 37 6 26 101 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 76 66 0.2 44 9 10 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 43 0.2 36 6 12 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 96 86 0.5 36 14 39 151 33 SW San Bernardino Vly 99 83 0.5 59 14 38 143 34 C San Bernardino Vly 97 89 0.5 47 12 42 159 35 E San Bernardino Vly 97 87 0.4 46 10 33 154 36 W San Bernardino Mtns 89 84 0.4 38 10 40 147 37 C San Bernardino Mtns 90 87 0.4 44 7 41 154 38 Big Bear Lake 87 79 0.4 41 7 32 129 San Bernardino County: Mojave Desert Air Basin 39 Phelan 75 71 0.4 36 7 41 101 40 Hesperia 69 64 0.4 32 8 43 80 41 Trona 53 50 0.2 29 6 17 46 42 Victorville 71 64 0.4 37 10 44 80 43 Yucca Vly 73 67 0.3 38 7 20 90 44 Barstow 63 57 0.3 40 8 43 58 45 Twentynine Palms 68 61 0.2 38 7 19 71 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., AUG. 25, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 74 Ozone Central Mojave Desert AQI: 90 Ozone Coachella Valley/Low Desert AQI: 87 Ozone Coastal Area AQI: 58 PM2.5 Inland Orange County AQI: 67 Ozone Northern Mojave Desert AQI: 58 Ozone Temecula/Anza Area AQI: 61 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 101 Ozone Big Bear Lake AQI: 129 Ozone Hemet/Elsinore Area AQI: 108 Ozone Metropolitan Area AQI: 101 Ozone Riverside Valley AQI: 150 Ozone San Fernando/Santa Clarita Valleys AQI: 105 Ozone San Gabriel Mountains AQI: 112 Ozone Victor Valley AQI: 101 Ozone UNHEALTHY in the following area(s): San Bernardino Mountains AQI: 154 Ozone San Bernardino Valley AQI: 159 Ozone San Gabriel Valley AQI: 169 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with warmer temperatures are expected. Patchy morning fog is expected along the coast. Inversion Base: 1562 FT | Breaking Temperature: 92 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2168 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 TUESDAY, AUGUST 25, 2026 IN THE SOUTH COAST AIR BASIN.