SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., AUG. 14, 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 44 0.5 17 9 16 50 2 NW Coastal LA 41 34 0.3 17 6 10 33 3 SW Coastal LA 40 33 0.1 18 6 8 33 4 S Coastal LA 46 39 0.2 19 6 15 36 5 Southeast LA Co 50 42 0.4 21 8 22 44 6 W San Fernando Vly 52 46 0.3 18 7 9 43 7 E San Fernando Vly 56 48 0.4 18 9 13 50 8 W San Gabriel Vly 58 50 0.3 22 10 10 53 9 E San Gabriel Vly 70 57 0.3 26 10 20 58 10 Pomona Walnut Vly 66 53 0.3 34 10 15 53 11 S San Gabriel Vly 56 47 0.3 23 9 22 50 12 S Central LA Co 46 38 0.2 18 8 14 44 13 Santa Clarita Vly 65 54 0.2 19 8 11 50 15 San Gabriel Mts 60 53 0.3 33 9 20 50 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 62 55 0.2 21 10 24 53 Orange County: South Coast Air Basin 16 N Orange Co 56 47 0.1 27 8 13 44 17 Central Orange Co 48 42 0.3 19 7 11 39 18 N Coastal Orange Co 46 40 0.2 19 4 14 37 19 Saddleback Vly 50 45 0.2 26 4 11 42 20 Central Coastal 46 41 0.2 18 4 10 38 21 Capistrano Vly 43 39 0.2 23 4 8 36 Riverside County: South Coast Air Basin 22 Norco/Corona 62 55 0.3 35 9 11 51 23 Metro Riverside Co 66 58 0.4 37 11 9 61 24 Perris Vly 67 57 0.3 36 9 13 58 25 Lake Elsinore 52 47 0.2 17 7 7 44 26 Temecula Vly 41 38 0.2 30 8 7 44 27 Anza Vly 53 49 0.2 35 10 8 53 28 Hemet/San Jacinto 53 50 0.2 34 8 14 46 29 Banning 62 57 0.2 32 6 10 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 67 58 0.2 105 21 8 76 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 42 0.2 32 13 9 58 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 68 57 0.4 38 11 13 58 33 SW San Bernardino Vly 63 54 0.3 38 10 16 53 34 C San Bernardino Vly 78 66 0.3 40 10 20 87 35 E San Bernardino Vly 84 68 0.3 38 9 16 93 36 W San Bernardino Mtns 70 61 0.3 34 9 21 71 37 C San Bernardino Mtns 75 71 0.2 37 6 24 101 38 Big Bear Lake 64 56 0.2 35 6 20 54 San Bernardino County: Mojave Desert Air Basin 39 Phelan 67 61 0.2 26 6 28 71 40 Hesperia 67 59 0.2 24 8 28 64 41 Trona 54 47 0.1 22 5 19 44 42 Victorville 62 56 0.2 25 8 30 54 43 Yucca Vly 63 55 0.2 34 12 17 56 44 Barstow 58 55 0.2 22 9 38 51 45 Twentynine Palms 52 50 0.2 33 12 15 56 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., AUG. 14, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 38 Ozone Inland Orange County AQI: 42 Ozone Metropolitan Area AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 50 PM2.5 San Gabriel Mountains AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Banning Pass Area AQI: 58 Ozone Big Bear Lake AQI: 54 Ozone Central Mojave Desert AQI: 56 PM2.5 Coachella Valley/Low Desert AQI: 76 PM10 Hemet/Elsinore Area AQI: 58 Ozone Northern Mojave Desert AQI: 51 Ozone Riverside Valley AQI: 61 Ozone San Bernardino Valley AQI: 93 Ozone San Gabriel Valley AQI: 58 Ozone Temecula/Anza Area AQI: 53 PM2.5 Victor Valley AQI: 71 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): San Bernardino Mountains AQI: 101 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Onshore flow and widespread marine clouds are expected to continue Friday with a chance of patchy drizzle in the morning. A slow warming trend is forecast to start Friday. Inversion Base: 3067 FT | Breaking Temperature: 83 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 3537 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 37 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 FRIDAY, AUGUST 14, 2026 IN THE SOUTH COAST AIR BASIN.