SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., JUL. 04, 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 65 54 0.4 42 36 20 102 2 NW Coastal LA 53 48 0.4 39 26 14 82 3 SW Coastal LA 44 40 0.1 47 34 14 97 4 S Coastal LA 52 46 0.2 42 23 17 77 5 Southeast LA Co 60 51 0.4 54 48 22 132 6 W San Fernando Vly 63 58 0.4 35 17 13 66 7 E San Fernando Vly 71 61 0.4 43 23 17 77 8 W San Gabriel Vly 75 61 0.4 53 27 14 84 9 E San Gabriel Vly 80 67 0.4 70 22 20 90 10 Pomona Walnut Vly 82 67 0.5 70 29 22 90 11 S San Gabriel Vly 66 54 0.4 60 37 22 105 12 S Central LA Co 55 48 0.3 63 57 14 152 13 Santa Clarita Vly 73 64 0.3 33 14 17 80 15 San Gabriel Mts 74 64 0.4 70 19 21 80 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 72 65 0.3 25 15 14 84 Orange County: South Coast Air Basin 16 N Orange Co 66 56 0.2 58 44 14 122 17 Central Orange Co 57 49 0.4 56 50 13 137 18 N Coastal Orange Co 49 42 0.3 40 28 16 86 19 Saddleback Vly 52 48 0.2 55 12 14 56 20 Central Coastal 49 43 0.3 37 14 13 60 21 Capistrano Vly 48 44 0.3 34 10 12 53 Riverside County: South Coast Air Basin 22 Norco/Corona 69 63 0.4 71 20 16 77 23 Metro Riverside Co 75 68 0.6 75 20 22 93 24 Perris Vly 76 67 0.4 56 14 25 90 25 Lake Elsinore 62 58 0.4 32 10 11 61 26 Temecula Vly 50 47 0.3 33 10 12 53 27 Anza Vly 56 52 0.3 36 9 14 50 28 Hemet/San Jacinto 65 60 0.3 48 11 25 67 29 Banning 79 72 0.3 41 11 22 105 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 82 73 0.2 40 12 16 108 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 63 59 0.2 28 9 14 64 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 78 68 0.5 72 16 22 93 33 SW San Bernardino Vly 73 65 0.5 73 30 25 90 34 C San Bernardino Vly 85 73 0.5 58 20 30 108 35 E San Bernardino Vly 87 74 0.5 59 13 28 112 36 W San Bernardino Mtns 79 72 0.4 66 14 26 105 37 C San Bernardino Mtns 84 75 0.3 53 10 29 115 38 Big Bear Lake 70 65 0.3 47 10 27 84 San Bernardino County: Mojave Desert Air Basin 39 Phelan 74 69 0.3 40 10 23 97 40 Hesperia 71 65 0.3 21 9 27 84 41 Trona 63 61 0.2 23 9 17 71 42 Victorville 75 70 0.3 29 9 23 100 43 Yucca Vly 69 66 0.2 25 9 22 87 44 Barstow 65 62 0.2 26 10 39 74 45 Twentynine Palms 66 62 0.2 25 10 21 74 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., JUL. 04, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 84 Ozone Big Bear Lake AQI: 84 Ozone Central Mojave Desert AQI: 87 Ozone Coastal Area AQI: 97 PM2.5 Hemet/Elsinore Area AQI: 90 Ozone Northern Mojave Desert AQI: 74 Ozone Riverside Valley AQI: 93 Ozone San Fernando/Santa Clarita Valleys AQI: 80 Ozone San Gabriel Mountains AQI: 80 Ozone Temecula/Anza Area AQI: 53 PM2.5 Victor Valley AQI: 100 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 105 Ozone Coachella Valley/Low Desert AQI: 108 Ozone Inland Orange County AQI: 137 PM2.5 San Bernardino Mountains AQI: 115 Ozone San Bernardino Valley AQI: 112 Ozone San Gabriel Valley AQI: 105 PM2.5 UNHEALTHY in the following area(s): Metropolitan Area AQI: 152 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Onshore flow is forecast to continue Saturday with night and morning low clouds for the coasts and coastal valleys, though less cloud coverage is expected compared to what has been seen recently. A gradual warming trend is expected to continue Saturday. Inversion Base: 486 FT | Breaking Temperature: 75 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1942 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 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 SATURDAY, JULY 04, 2026 IN THE SOUTH COAST AIR BASIN.