SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., OCT. 05, 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 84 71 0.5 32 8 37 101 2 NW Coastal LA 78 65 0.6 29 10 26 84 3 SW Coastal LA 67 55 0.3 30 12 35 56 4 S Coastal LA 73 63 0.4 28 11 39 77 5 Southeast LA Co 80 66 0.9 30 11 41 87 6 W San Fernando Vly 75 69 0.7 28 8 26 97 7 E San Fernando Vly 80 70 0.6 32 5 32 100 8 W San Gabriel Vly 82 71 0.4 33 4 28 101 9 E San Gabriel Vly 89 75 0.5 28 3 35 115 10 Pomona Walnut Vly 89 71 0.7 39 7 41 101 11 S San Gabriel Vly 81 71 0.6 31 8 41 101 12 S Central LA Co 87 71 0.9 30 11 31 101 13 Santa Clarita Vly 69 61 0.3 32 9 26 71 15 San Gabriel Mts 73 65 0.5 36 6 30 84 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 58 54 0.4 38 9 32 50 Orange County: South Coast Air Basin 16 N Orange Co 76 64 0.4 42 9 28 80 17 Central Orange Co 69 59 1.0 26 9 31 64 18 N Coastal Orange Co 78 62 0.6 25 9 36 74 19 Saddleback Vly 80 68 0.4 42 4 31 93 20 Central Coastal 79 64 0.5 25 9 28 80 21 Capistrano Vly 75 62 0.4 33 9 25 74 Riverside County: South Coast Air Basin 22 Norco/Corona 74 67 0.6 58 8 33 90 23 Metro Riverside Co 76 71 0.6 67 10 36 101 24 Perris Vly 60 58 0.6 41 6 34 61 25 Lake Elsinore 57 53 0.3 26 6 23 49 26 Temecula Vly 53 51 0.2 48 3 21 47 27 Anza Vly 50 48 0.2 59 3 19 53 28 Hemet/San Jacinto 56 53 0.5 38 3 36 49 29 Banning 56 52 0.5 31 2 39 48 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 57 54 0.2 79 8 17 63 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 48 46 0.2 35 5 16 43 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 83 73 0.6 35 9 29 108 33 SW San Bernardino Vly 82 71 0.7 58 10 37 101 34 C San Bernardino Vly 68 62 0.6 45 7 43 74 35 E San Bernardino Vly 69 65 0.6 43 5 36 84 36 W San Bernardino Mtns 71 65 0.5 34 6 35 84 37 C San Bernardino Mtns 58 56 0.6 41 4 36 54 38 Big Bear Lake 56 55 0.6 36 5 36 51 San Bernardino County: Mojave Desert Air Basin 39 Phelan 58 57 0.5 28 5 35 58 40 Hesperia 51 50 0.5 18 5 37 46 41 Trona 47 46 0.3 12 3 12 43 42 Victorville 58 57 0.5 24 7 36 58 43 Yucca Vly 49 48 0.3 24 5 26 44 44 Barstow 59 54 0.4 24 4 49 50 45 Twentynine Palms 48 47 0.3 27 5 24 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., OCT. 05, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 50 PM2.5 Banning Pass Area AQI: 48 Ozone Central Mojave Desert AQI: 44 Ozone Northern Mojave Desert AQI: 50 Ozone MODERATE in the following area(s): Big Bear Lake AQI: 51 Ozone Coachella Valley/Low Desert AQI: 63 PM10 Coastal Area AQI: 84 Ozone Hemet/Elsinore Area AQI: 61 Ozone Inland Orange County AQI: 93 Ozone San Bernardino Mountains AQI: 84 Ozone San Fernando/Santa Clarita Valleys AQI: 100 Ozone San Gabriel Mountains AQI: 84 Ozone Temecula/Anza Area AQI: 53 PM10 Victor Valley AQI: 58 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Metropolitan Area AQI: 101 Ozone Riverside Valley AQI: 101 Ozone San Bernardino Valley AQI: 108 Ozone San Gabriel Valley AQI: 115 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ The National Weather Service (NWS) has issued Extreme Heat Warnings that remain in effect through 8 PM Thursday (October 8) for Orange County and portions of San Bernardino, Riverside, and Los Angeles Counties including the coasts, valleys, and the Inland Empire. There is a slight chance for showers over the San Bernardino and Riverside County mountains on Monday afternoon. Elevated to brief critical fire weather is forecast. Inversion Base: 486 FT | Breaking Temperature: 88 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 9182 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 1, 8, 9, 10, 11, 12, 23, 32, 33 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 MONDAY, OCTOBER 05, 2026 IN THE SOUTH COAST AIR BASIN.