SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., JUL. 22, 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 70 59 0.6 32 11 22 64 2 NW Coastal LA 59 52 0.3 32 9 13 50 3 SW Coastal LA 38 35 0.1 32 8 9 44 4 S Coastal LA 47 39 0.2 34 9 22 50 5 Southeast LA Co 61 48 0.4 36 10 23 53 6 W San Fernando Vly 67 61 0.3 31 8 17 71 7 E San Fernando Vly 77 66 0.4 33 10 18 87 8 W San Gabriel Vly 75 61 0.3 36 12 15 71 9 E San Gabriel Vly 86 72 0.4 41 14 21 105 10 Pomona Walnut Vly 78 64 0.3 41 12 21 80 11 S San Gabriel Vly 68 55 0.3 38 12 23 56 12 S Central LA Co 56 47 0.3 33 9 17 50 13 Santa Clarita Vly 86 75 0.2 31 9 19 115 15 San Gabriel Mts 80 71 0.3 41 11 23 101 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 73 65 0.2 29 11 26 84 Orange County: South Coast Air Basin 16 N Orange Co 62 48 0.1 40 11 13 55 17 Central Orange Co 56 44 0.3 35 11 11 55 18 N Coastal Orange Co 42 35 0.2 34 8 19 44 19 Saddleback Vly 53 44 0.1 40 8 15 44 20 Central Coastal 45 39 0.2 32 8 15 44 21 Capistrano Vly 48 42 0.2 32 8 14 44 Riverside County: South Coast Air Basin 22 Norco/Corona 69 60 0.3 47 10 15 67 23 Metro Riverside Co 81 72 0.5 51 11 16 105 24 Perris Vly 78 71 0.3 43 11 22 101 25 Lake Elsinore 84 72 0.2 27 11 15 105 26 Temecula Vly 57 55 0.2 37 9 13 51 27 Anza Vly 60 59 0.2 40 7 11 64 28 Hemet/San Jacinto 74 68 0.3 40 9 22 93 29 Banning 92 77 0.2 38 8 21 122 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 80 73 0.2 47 12 8 108 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 58 55 0.2 37 8 9 51 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 86 76 0.4 39 14 22 118 33 SW San Bernardino Vly 76 64 0.3 47 12 25 80 34 C San Bernardino Vly 86 79 0.3 46 11 29 129 35 E San Bernardino Vly 87 82 0.4 45 11 24 140 36 W San Bernardino Mtns 98 88 0.3 39 14 27 156 37 C San Bernardino Mtns 103 93 0.3 44 7 29 169 38 Big Bear Lake 80 74 0.3 41 7 24 112 San Bernardino County: Mojave Desert Air Basin 39 Phelan 97 91 0.3 34 9 31 164 40 Hesperia 83 75 0.3 31 9 32 115 41 Trona 63 60 0.2 29 7 21 67 42 Victorville 72 67 0.2 32 9 33 90 43 Yucca Vly 77 70 0.2 37 9 15 100 44 Barstow 70 64 0.2 28 8 31 80 45 Twentynine Palms 70 65 0.2 37 9 14 84 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., JUL. 22, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 84 Ozone Central Mojave Desert AQI: 100 Ozone Inland Orange County AQI: 55 PM2.5 Metropolitan Area AQI: 64 Ozone Northern Mojave Desert AQI: 80 Ozone Temecula/Anza Area AQI: 64 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 122 Ozone Big Bear Lake AQI: 112 Ozone Coachella Valley/Low Desert AQI: 108 Ozone Hemet/Elsinore Area AQI: 105 Ozone Riverside Valley AQI: 105 Ozone San Bernardino Valley AQI: 140 Ozone San Fernando/Santa Clarita Valleys AQI: 115 Ozone San Gabriel Mountains AQI: 101 Ozone San Gabriel Valley AQI: 105 Ozone UNHEALTHY in the following area(s): San Bernardino Mountains AQI: 169 Ozone Victor Valley AQI: 164 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ The National Weather Service (NWS) has issued a Heat Advisory for most of Orange and Los Angeles Counties, the Inland Empire, and the mountains of San Bernardino and Riverside Counties starting at 10 AM Wednesday through Monday evening. The NWS has also issued an Extreme Heat Watch for the Coachella Valley and eastern Riverside County starting Wednesday morning through Monday evening. Night and morning low clouds are forecast for coastal areas and far western valleys. Inversion Base: 2356 FT | Breaking Temperature: 81 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 3147 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 WEDNESDAY, JULY 22, 2026 IN THE SOUTH COAST AIR BASIN.