SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., JUL. 24, 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 42 14 30 60 2 NW Coastal LA 46 40 0.4 39 11 15 55 3 SW Coastal LA 40 34 0.2 40 10 16 53 4 S Coastal LA 39 35 0.2 38 9 25 50 5 Southeast LA Co 53 47 0.4 40 11 27 55 6 W San Fernando Vly 78 66 0.4 37 10 19 87 7 E San Fernando Vly 68 60 0.5 41 13 25 67 8 W San Gabriel Vly 81 68 0.5 41 14 22 93 9 E San Gabriel Vly 99 83 0.4 41 12 29 143 10 Pomona Walnut Vly 94 79 0.5 41 13 35 129 11 S San Gabriel Vly 63 56 0.4 41 13 26 58 12 S Central LA Co 46 40 0.3 40 11 22 55 13 Santa Clarita Vly 91 77 0.3 36 11 23 122 15 San Gabriel Mts 83 71 0.4 41 12 30 101 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 70 62 0.3 32 12 26 74 Orange County: South Coast Air Basin 16 N Orange Co 61 55 0.2 43 12 16 56 17 Central Orange Co 50 56 0.2 32 11 11 55 18 N Coastal Orange Co 41 40 0.2 35 7 21 39 19 Saddleback Vly 54 56 0.2 43 6 19 54 20 Central Coastal 45 47 0.3 38 6 19 44 21 Capistrano Vly 46 46 0.3 41 7 20 43 Riverside County: South Coast Air Basin 22 Norco/Corona 91 77 0.3 52 13 23 122 23 Metro Riverside Co 105 84 0.4 56 15 27 147 24 Perris Vly 88 78 0.3 48 13 29 126 25 Lake Elsinore 70 65 0.3 42 10 20 84 26 Temecula Vly 56 51 0.3 41 11 18 55 27 Anza Vly 61 55 0.3 41 6 15 51 28 Hemet/San Jacinto 69 66 0.3 41 11 28 87 29 Banning 74 71 0.3 36 8 24 101 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 70 66 0.2 44 7 11 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 43 0.2 37 6 12 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 102 85 0.5 39 13 33 150 33 SW San Bernardino Vly 94 78 0.4 51 13 34 126 34 C San Bernardino Vly 105 89 0.4 40 13 39 159 35 E San Bernardino Vly 107 92 0.4 48 12 30 166 36 W San Bernardino Mtns 89 79 0.4 38 9 34 129 37 C San Bernardino Mtns 95 85 0.3 39 8 33 150 38 Big Bear Lake 89 81 0.3 37 6 29 136 San Bernardino County: Mojave Desert Air Basin 39 Phelan 71 66 0.3 33 7 30 87 40 Hesperia 67 65 0.3 29 8 32 84 41 Trona 58 54 0.2 30 7 21 50 42 Victorville 68 65 0.3 31 10 30 84 43 Yucca Vly 75 67 0.2 37 6 20 90 44 Barstow 70 63 0.3 34 9 40 77 45 Twentynine Palms 66 57 0.2 37 6 19 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., JUL. 24, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 74 Ozone Central Mojave Desert AQI: 90 Ozone Coachella Valley/Low Desert AQI: 87 Ozone Coastal Area AQI: 55 PM2.5 Inland Orange County AQI: 55 PM2.5 Metropolitan Area AQI: 60 PM2.5 Northern Mojave Desert AQI: 77 Ozone Temecula/Anza Area AQI: 55 PM2.5 Victor Valley AQI: 87 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 101 Ozone Big Bear Lake AQI: 136 Ozone Hemet/Elsinore Area AQI: 126 Ozone Riverside Valley AQI: 147 Ozone San Bernardino Mountains AQI: 150 Ozone San Fernando/Santa Clarita Valleys AQI: 122 Ozone San Gabriel Mountains AQI: 101 Ozone San Gabriel Valley AQI: 143 Ozone UNHEALTHY in the following area(s): San Bernardino Valley AQI: 166 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Increasing temperatures on Friday. Light onshore pressure gradients. Inversion Base: 1488 FT | Breaking Temperature: 96 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2032 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 FRIDAY, JULY 24, 2026 IN THE SOUTH COAST AIR BASIN.