SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., JUL. 28, 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 61 55 0.5 29 18 27 68 2 NW Coastal LA 46 44 0.3 29 15 14 62 3 SW Coastal LA 36 34 0.7 35 12 9 56 4 S Coastal LA 45 40 0.2 49 10 19 53 5 Southeast LA Co 54 47 0.4 50 14 22 60 6 W San Fernando Vly 63 59 0.3 28 15 14 64 7 E San Fernando Vly 67 61 0.4 29 18 21 71 8 W San Gabriel Vly 76 64 0.3 34 18 18 80 9 E San Gabriel Vly 87 74 0.4 31 18 20 112 10 Pomona Walnut Vly 83 70 0.4 48 17 20 100 11 S San Gabriel Vly 64 55 0.3 47 17 20 66 12 S Central LA Co 50 43 0.2 39 11 16 55 13 Santa Clarita Vly 79 71 0.3 29 16 18 101 15 San Gabriel Mts 76 68 0.4 35 16 21 93 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 77 72 0.3 32 13 22 105 Orange County: South Coast Air Basin 16 N Orange Co 58 51 0.1 55 15 13 62 17 Central Orange Co 48 42 0.2 55 14 11 60 18 N Coastal Orange Co 42 37 0.2 47 8 17 44 19 Saddleback Vly 50 45 0.2 48 6 14 44 20 Central Coastal 47 41 0.2 41 7 14 39 21 Capistrano Vly 48 42 0.3 31 9 14 50 Riverside County: South Coast Air Basin 22 Norco/Corona 79 67 0.3 50 15 15 90 23 Metro Riverside Co 90 75 0.5 56 17 15 115 24 Perris Vly 75 66 0.3 40 14 22 87 25 Lake Elsinore 65 59 0.3 24 13 14 64 26 Temecula Vly 52 49 0.3 37 14 14 60 27 Anza Vly 65 58 0.3 42 9 15 61 28 Hemet/San Jacinto 67 60 0.3 37 12 22 67 29 Banning 73 66 0.3 35 10 19 87 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 0.3 65 13 16 90 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 43 0.2 37 10 13 53 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 89 77 0.4 38 15 23 122 33 SW San Bernardino Vly 82 70 0.4 50 16 24 100 34 C San Bernardino Vly 100 87 0.3 40 14 28 154 35 E San Bernardino Vly 99 86 0.4 42 12 25 151 36 W San Bernardino Mtns 89 79 0.4 37 12 26 129 37 C San Bernardino Mtns 91 81 0.3 38 7 28 136 38 Big Bear Lake 79 70 0.3 37 7 26 100 San Bernardino County: Mojave Desert Air Basin 39 Phelan 87 79 0.3 31 7 27 129 40 Hesperia 76 69 0.3 29 8 29 97 41 Trona 57 54 0.2 30 6 15 50 42 Victorville 75 69 0.3 30 9 29 97 43 Yucca Vly 74 63 0.3 36 10 22 77 44 Barstow 69 64 0.3 24 9 39 80 45 Twentynine Palms 58 54 0.3 36 11 20 55 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., JUL. 28, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Banning Pass Area AQI: 87 Ozone Big Bear Lake AQI: 100 Ozone Central Mojave Desert AQI: 77 Ozone Coachella Valley/Low Desert AQI: 90 Ozone Coastal Area AQI: 62 PM2.5 Hemet/Elsinore Area AQI: 87 Ozone Inland Orange County AQI: 60 PM2.5 Metropolitan Area AQI: 68 PM2.5 Northern Mojave Desert AQI: 80 Ozone San Gabriel Mountains AQI: 93 Ozone Temecula/Anza Area AQI: 61 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Antelope Valley AQI: 105 Ozone Riverside Valley AQI: 115 Ozone San Bernardino Mountains AQI: 136 Ozone San Fernando/Santa Clarita Valleys AQI: 101 Ozone San Gabriel Valley AQI: 112 Ozone Victor Valley AQI: 129 Ozone UNHEALTHY in the following area(s): San Bernardino Valley AQI: 154 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Stronger onshore flow will allow for a little bit of cooling on Tuesday, but temperatures will still be about 5 degrees warmer than normal. Humidity will remain about the same but there will be less cloud cover. Afternoon and evening winds in the Inland Empire and lower deserts could gust to 25 mph. Inversion Base: 1508 FT | Breaking Temperature: 86 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2016 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 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 TUESDAY, JULY 28, 2026 IN THE SOUTH COAST AIR BASIN.