SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., JUL. 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 67 51 0.6 27 12 25 56 2 NW Coastal LA 53 47 0.3 28 11 12 55 3 SW Coastal LA 43 42 0.2 34 10 17 53 4 S Coastal LA 44 42 0.2 44 9 18 50 5 Southeast LA Co 60 56 0.5 46 11 22 55 6 W San Fernando Vly 76 76 0.4 29 10 16 118 7 E San Fernando Vly 72 72 0.5 30 12 21 105 8 W San Gabriel Vly 78 78 0.5 35 12 18 126 9 E San Gabriel Vly 90 88 0.4 41 11 24 156 10 Pomona Walnut Vly 91 88 0.4 47 12 23 156 11 S San Gabriel Vly 75 71 0.4 46 12 22 101 12 S Central LA Co 49 45 0.3 36 10 17 53 13 Santa Clarita Vly 92 90 0.3 32 12 19 161 15 San Gabriel Mts 78 80 0.4 41 10 23 133 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 75 71 0.3 40 12 23 101 Orange County: South Coast Air Basin 16 N Orange Co 62 60 0.2 50 11 13 67 17 Central Orange Co 50 51 0.2 50 11 9 55 18 N Coastal Orange Co 46 45 0.2 46 7 16 43 19 Saddleback Vly 60 58 0.2 48 6 15 61 20 Central Coastal 55 54 0.3 45 6 15 50 21 Capistrano Vly 56 58 0.3 43 8 16 61 Riverside County: South Coast Air Basin 22 Norco/Corona 83 80 0.4 49 11 19 133 23 Metro Riverside Co 94 88 0.5 50 13 21 156 24 Perris Vly 75 82 0.4 46 11 25 140 25 Lake Elsinore 64 70 0.4 43 9 16 100 26 Temecula Vly 52 61 0.3 43 8 14 71 27 Anza Vly 58 60 0.2 45 6 11 67 28 Hemet/San Jacinto 64 72 0.3 42 7 24 105 29 Banning 70 78 0.3 36 7 21 126 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 68 72 0.2 49 6 7 105 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 50 56 0.2 37 6 9 54 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 84 86 0.5 37 12 25 151 33 SW San Bernardino Vly 86 86 0.4 48 12 28 151 34 C San Bernardino Vly 95 97 0.4 40 11 31 179 35 E San Bernardino Vly 95 105 0.4 45 10 26 200 36 W San Bernardino Mtns 79 86 0.4 37 8 27 151 37 C San Bernardino Mtns 87 93 0.4 38 6 28 169 38 Big Bear Lake 72 72 0.3 36 6 26 105 San Bernardino County: Mojave Desert Air Basin 39 Phelan 71 81 0.3 33 6 24 136 40 Hesperia 75 71 0.4 25 7 27 101 41 Trona 55 54 0.2 25 7 22 50 42 Victorville 75 71 0.3 29 9 24 101 43 Yucca Vly 75 71 0.2 35 7 17 101 44 Barstow 66 55 0.3 28 8 39 51 45 Twentynine Palms 60 56 0.2 36 8 16 54 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., JUL. 25, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Coastal Area AQI: 55 PM2.5 Inland Orange County AQI: 61 Ozone Metropolitan Area AQI: 67 Ozone Northern Mojave Desert AQI: 51 Ozone Temecula/Anza Area AQI: 71 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Antelope Valley AQI: 101 Ozone Banning Pass Area AQI: 126 Ozone Big Bear Lake AQI: 105 Ozone Central Mojave Desert AQI: 101 Ozone Coachella Valley/Low Desert AQI: 105 Ozone Hemet/Elsinore Area AQI: 140 Ozone San Gabriel Mountains AQI: 133 Ozone Victor Valley AQI: 136 Ozone UNHEALTHY in the following area(s): Riverside Valley AQI: 156 Ozone San Bernardino Mountains AQI: 169 Ozone San Bernardino Valley AQI: 200 Ozone San Fernando/Santa Clarita Valleys AQI: 161 Ozone San Gabriel Valley AQI: 156 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Warming temperatures on Saturday. Onshore pressure gradients and increasing ventilation. Inversion Base: 1505 FT | Breaking Temperature: 93 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2050 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: MARGINAL-BURN Burning is prohibited in source/receptor area 30 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 SATURDAY, JULY 25, 2026 IN THE SOUTH COAST AIR BASIN.