SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., OCT. 11, 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 43 38 0.7 24 6 17 35 2 NW Coastal LA 47 42 0.4 21 6 7 39 3 SW Coastal LA 41 37 0.2 22 6 20 34 4 S Coastal LA 48 44 0.4 20 5 16 41 5 Southeast LA Co 43 38 0.5 22 6 18 35 6 W San Fernando Vly 42 40 0.5 18 6 10 37 7 E San Fernando Vly 45 42 0.5 23 5 13 39 8 W San Gabriel Vly 43 39 0.3 22 5 9 36 9 E San Gabriel Vly 38 34 0.3 16 2 15 31 10 Pomona Walnut Vly 41 37 0.4 31 5 25 34 11 S San Gabriel Vly 42 37 0.3 22 5 18 34 12 S Central LA Co 42 38 0.4 22 6 15 35 13 Santa Clarita Vly 35 32 0.2 19 4 11 30 15 San Gabriel Mts 38 35 0.3 29 4 14 32 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 43 38 0.2 16 7 13 39 Orange County: South Coast Air Basin 16 N Orange Co 41 37 0.2 20 6 14 34 17 Central Orange Co 49 44 0.4 16 6 21 41 18 N Coastal Orange Co 45 41 0.4 17 5 17 38 19 Saddleback Vly 41 39 0.2 20 4 20 36 20 Central Coastal 41 39 0.3 15 4 15 36 21 Capistrano Vly 40 38 0.2 14 5 12 35 Riverside County: South Coast Air Basin 22 Norco/Corona 43 37 0.5 25 8 22 44 23 Metro Riverside Co 45 38 0.8 24 11 26 55 24 Perris Vly 38 35 0.5 42 7 20 39 25 Lake Elsinore 40 38 0.2 14 5 11 35 26 Temecula Vly 41 39 0.2 21 6 11 36 27 Anza Vly 42 40 0.2 47 5 13 44 28 Hemet/San Jacinto 39 36 0.3 56 5 15 51 29 Banning 40 33 0.3 66 5 13 56 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 48 44 0.2 79 11 15 63 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 43 42 0.2 18 11 11 55 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 30 26 0.3 39 7 14 39 33 SW San Bernardino Vly 40 35 0.4 34 10 23 53 34 C San Bernardino Vly 37 30 0.3 38 7 20 39 35 E San Bernardino Vly 37 31 0.6 54 6 22 50 36 W San Bernardino Mtns 36 31 0.3 30 5 17 29 37 C San Bernardino Mtns 51 44 0.3 41 5 17 41 38 Big Bear Lake 41 38 0.3 52 5 20 48 San Bernardino County: Mojave Desert Air Basin 39 Phelan 46 41 0.3 16 5 17 38 40 Hesperia 47 42 0.3 18 5 19 39 41 Trona 41 38 0.2 18 5 8 35 42 Victorville 45 41 0.3 12 6 18 38 43 Yucca Vly 46 45 0.2 40 7 18 42 44 Barstow 45 41 0.2 18 5 29 38 45 Twentynine Palms 43 41 0.2 31 7 16 39 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., OCT. 11, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 39 PM2.5 Big Bear Lake AQI: 48 PM10 Central Mojave Desert AQI: 42 Ozone Coastal Area AQI: 41 Ozone Inland Orange County AQI: 41 Ozone Metropolitan Area AQI: 35 Ozone Northern Mojave Desert AQI: 38 Ozone San Bernardino Mountains AQI: 41 Ozone San Fernando/Santa Clarita Valleys AQI: 39 Ozone San Gabriel Mountains AQI: 32 Ozone San Gabriel Valley AQI: 36 Ozone Temecula/Anza Area AQI: 44 PM10 Victor Valley AQI: 39 Ozone MODERATE in the following area(s): Banning Pass Area AQI: 56 PM10 Coachella Valley/Low Desert AQI: 63 PM10 Hemet/Elsinore Area AQI: 51 PM10 Riverside Valley AQI: 55 PM2.5 San Bernardino Valley AQI: 53 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures will cool region wide through the weekend. Cool, cloudy conditions are expected Sunday with periods of light to moderate rain continuing through the afternoon, especially across Los Angeles County. Inversion Base: 486 FT | Breaking Temperature: 76 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 11159.5144 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: 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 SUNDAY, OCTOBER 11, 2026 IN THE SOUTH COAST AIR BASIN.