SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., AUG. 26, 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 77 65 0.5 35 14 36 84 2 NW Coastal LA 66 55 0.5 33 14 20 60 3 SW Coastal LA 47 39 0.2 34 12 24 56 4 S Coastal LA 53 44 0.5 33 10 27 53 5 Southeast LA Co 71 59 0.5 35 12 29 64 6 W San Fernando Vly 77 71 0.4 32 11 22 101 7 E San Fernando Vly 75 68 0.5 35 13 28 93 8 W San Gabriel Vly 94 79 0.5 35 14 22 129 9 E San Gabriel Vly 109 91 0.5 36 12 29 164 10 Pomona Walnut Vly 98 81 0.6 39 13 35 136 11 S San Gabriel Vly 88 71 0.4 35 13 23 101 12 S Central LA Co 64 53 0.3 34 12 22 56 13 Santa Clarita Vly 87 79 0.3 34 11 25 129 15 San Gabriel Mts 85 76 0.4 36 11 34 118 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 72 65 0.3 35 11 27 84 Orange County: South Coast Air Basin 16 N Orange Co 72 62 0.2 42 12 14 74 17 Central Orange Co 56 50 0.4 33 11 12 55 18 N Coastal Orange Co 51 46 0.5 33 6 23 43 19 Saddleback Vly 63 56 0.2 42 6 22 54 20 Central Coastal 56 51 0.3 35 6 21 47 21 Capistrano Vly 56 51 0.4 37 7 23 47 Riverside County: South Coast Air Basin 22 Norco/Corona 85 75 0.5 51 12 26 115 23 Metro Riverside Co 93 82 0.5 55 14 30 140 24 Perris Vly 81 75 0.5 47 12 31 115 25 Lake Elsinore 70 67 0.4 37 10 24 90 26 Temecula Vly 60 56 0.3 38 11 20 55 27 Anza Vly 62 59 0.3 41 11 16 64 28 Hemet/San Jacinto 71 67 0.4 41 10 29 90 29 Banning 72 69 0.4 38 7 23 97 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 72 67 0.2 46 21 10 90 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 56 52 0.2 35 13 12 58 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 98 88 0.6 36 15 38 156 33 SW San Bernardino Vly 92 79 0.6 49 14 39 129 34 C San Bernardino Vly 97 90 0.5 45 12 43 161 35 E San Bernardino Vly 99 89 0.5 50 10 32 159 36 W San Bernardino Mtns 89 82 0.4 36 11 40 140 37 C San Bernardino Mtns 92 82 0.5 42 6 39 140 38 Big Bear Lake 84 77 0.4 40 10 31 122 San Bernardino County: Mojave Desert Air Basin 39 Phelan 71 65 0.4 31 8 39 84 40 Hesperia 74 65 0.4 24 8 41 84 41 Trona 56 51 0.2 26 6 17 47 42 Victorville 69 64 0.4 27 10 42 80 43 Yucca Vly 71 62 0.3 36 15 20 74 44 Barstow 67 62 0.3 26 11 42 74 45 Twentynine Palms 58 55 0.2 35 14 18 60 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., AUG. 26, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 84 Ozone Banning Pass Area AQI: 97 Ozone Central Mojave Desert AQI: 74 Ozone Coachella Valley/Low Desert AQI: 90 Ozone Coastal Area AQI: 60 PM2.5 Inland Orange County AQI: 55 PM2.5 Metropolitan Area AQI: 84 Ozone Northern Mojave Desert AQI: 74 Ozone Temecula/Anza Area AQI: 64 Ozone Victor Valley AQI: 84 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Big Bear Lake AQI: 122 Ozone Hemet/Elsinore Area AQI: 115 Ozone Riverside Valley AQI: 140 Ozone San Bernardino Mountains AQI: 140 Ozone San Fernando/Santa Clarita Valleys AQI: 129 Ozone San Gabriel Mountains AQI: 118 Ozone UNHEALTHY in the following area(s): San Bernardino Valley AQI: 161 Ozone San Gabriel Valley AQI: 164 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with warmer temperatures are expected. Morning patchy fog is expected along the coasts. Inversion Base: 789 FT | Breaking Temperature: 92 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1868 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 WEDNESDAY, AUGUST 26, 2026 IN THE SOUTH COAST AIR BASIN.