SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., OCT. 02, 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 85 70 0.9 48 18 43 100 2 NW Coastal LA 69 59 0.5 42 20 26 71 3 SW Coastal LA 67 57 0.3 44 18 25 68 4 S Coastal LA 72 67 0.3 41 15 28 90 5 Southeast LA Co 78 70 0.7 46 18 38 100 6 W San Fernando Vly 84 70 0.6 39 12 24 100 7 E San Fernando Vly 86 70 0.7 47 13 37 100 8 W San Gabriel Vly 89 75 0.5 47 12 35 115 9 E San Gabriel Vly 89 75 0.6 40 8 43 115 10 Pomona Walnut Vly 91 74 0.7 47 15 50 112 11 S San Gabriel Vly 86 74 0.5 46 17 38 112 12 S Central LA Co 74 66 0.6 44 17 26 87 13 Santa Clarita Vly 90 77 0.3 42 9 28 122 15 San Gabriel Mts 82 71 0.5 46 8 38 101 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 62 58 0.4 42 13 35 61 Orange County: South Coast Air Basin 16 N Orange Co 77 71 0.4 52 17 28 101 17 Central Orange Co 71 65 0.6 33 17 21 84 18 N Coastal Orange Co 69 61 0.4 34 13 26 71 19 Saddleback Vly 79 70 0.4 52 9 32 100 20 Central Coastal 73 66 0.4 34 15 26 87 21 Capistrano Vly 78 70 0.4 38 17 29 100 Riverside County: South Coast Air Basin 22 Norco/Corona 82 70 0.6 70 14 39 100 23 Metro Riverside Co 90 74 0.8 81 17 48 112 24 Perris Vly 74 64 0.7 48 10 42 80 25 Lake Elsinore 77 66 0.4 39 11 30 87 26 Temecula Vly 58 53 0.4 38 5 26 49 27 Anza Vly 55 52 0.3 41 5 22 48 28 Hemet/San Jacinto 66 62 0.5 38 5 39 74 29 Banning 73 70 0.5 34 5 40 100 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 69 64 0.2 47 7 20 80 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 45 0.2 27 5 15 42 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 103 84 0.6 36 13 36 147 33 SW San Bernardino Vly 90 74 0.7 70 16 45 112 34 C San Bernardino Vly 83 69 0.6 44 11 43 97 35 E San Bernardino Vly 73 70 0.7 44 6 45 100 36 W San Bernardino Mtns 83 71 0.6 35 8 38 101 37 C San Bernardino Mtns 67 60 0.6 39 6 39 67 38 Big Bear Lake 66 63 0.6 37 5 39 77 San Bernardino County: Mojave Desert Air Basin 39 Phelan 61 59 0.5 29 6 33 64 40 Hesperia 57 54 0.6 13 8 37 50 41 Trona 48 45 0.3 30 5 8 42 42 Victorville 57 54 0.5 22 10 32 53 43 Yucca Vly 58 53 0.3 25 5 27 49 44 Barstow 55 51 0.4 22 5 48 47 45 Twentynine Palms 48 46 0.3 25 5 24 43 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., OCT. 02, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Central Mojave Desert AQI: 49 Ozone Northern Mojave Desert AQI: 47 Ozone Temecula/Anza Area AQI: 49 Ozone MODERATE in the following area(s): Antelope Valley AQI: 61 Ozone Banning Pass Area AQI: 100 Ozone Big Bear Lake AQI: 77 Ozone Coachella Valley/Low Desert AQI: 80 Ozone Coastal Area AQI: 90 Ozone Hemet/Elsinore Area AQI: 87 Ozone Inland Orange County AQI: 100 Ozone Victor Valley AQI: 64 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Metropolitan Area AQI: 101 Ozone Riverside Valley AQI: 112 Ozone San Bernardino Mountains AQI: 101 Ozone San Bernardino Valley AQI: 147 Ozone San Fernando/Santa Clarita Valleys AQI: 122 Ozone San Gabriel Mountains AQI: 101 Ozone San Gabriel Valley AQI: 115 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ The National Weather Service (NWS) has issued Extreme Heat Warnings for Orange County, and portions of San Bernardino and Riverside Counties including the Inland Empire in effect from 10 AM Friday (October 2) through 8 PM Thursday (October 8). The NWS has also issued an Extreme Heat Watch for much of Los Angeles County, also in effect October 2 through 8. Weak offshore flow is expected along with gusty Santa Ana winds. Some marine layer low clouds are expected Friday morning. Inversion Base: 486 FT | Breaking Temperature: 87 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2060 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 8, 9, 10, 11, 13, 15, 16, 23, 32, 33, 36 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 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 FRIDAY, OCTOBER 02, 2026 IN THE SOUTH COAST AIR BASIN.