SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., OCT. 12, 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 38 37 0.6 12 4 21 34 2 NW Coastal LA 44 40 0.3 11 5 16 37 3 SW Coastal LA 40 36 0.2 13 6 12 33 4 S Coastal LA 43 37 0.4 17 7 22 39 5 Southeast LA Co 38 35 0.7 18 7 25 39 6 W San Fernando Vly 41 38 0.4 10 4 9 35 7 E San Fernando Vly 40 38 0.4 12 4 16 35 8 W San Gabriel Vly 40 35 0.3 15 4 11 32 9 E San Gabriel Vly 39 36 0.3 18 2 16 33 10 Pomona Walnut Vly 39 36 0.3 28 5 16 33 11 S San Gabriel Vly 35 33 0.4 20 5 22 31 12 S Central LA Co 45 38 0.7 15 9 25 50 13 Santa Clarita Vly 44 36 0.2 11 5 14 33 15 San Gabriel Mts 40 36 0.3 26 4 14 33 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 49 46 0.2 11 6 6 43 Orange County: South Coast Air Basin 16 N Orange Co 36 35 0.2 24 6 16 33 17 Central Orange Co 34 32 0.2 20 6 16 33 18 N Coastal Orange Co 39 37 0.4 17 4 19 34 19 Saddleback Vly 40 39 0.2 23 3 14 36 20 Central Coastal 39 38 0.2 14 3 12 35 21 Capistrano Vly 39 37 0.2 13 3 7 34 Riverside County: South Coast Air Basin 22 Norco/Corona 39 36 0.3 31 7 15 39 23 Metro Riverside Co 38 35 0.5 33 9 21 50 24 Perris Vly 38 36 0.3 21 4 15 33 25 Lake Elsinore 41 37 0.2 16 4 4 34 26 Temecula Vly 40 37 0.2 20 3 7 34 27 Anza Vly 42 39 0.2 25 5 10 36 28 Hemet/San Jacinto 40 38 0.2 19 3 11 35 29 Banning 43 40 0.2 17 2 6 37 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 51 48 0.2 36 11 15 55 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 43 0.2 22 7 9 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 39 36 0.4 32 7 16 39 33 SW San Bernardino Vly 38 35 0.5 32 7 19 39 34 C San Bernardino Vly 38 36 0.6 25 5 21 33 35 E San Bernardino Vly 37 35 0.4 23 4 17 32 36 W San Bernardino Mtns 39 38 0.3 26 5 16 35 37 C San Bernardino Mtns 49 43 0.2 23 3 13 40 38 Big Bear Lake 44 43 0.2 20 5 16 40 San Bernardino County: Mojave Desert Air Basin 39 Phelan 51 49 0.2 15 4 12 45 40 Hesperia 43 39 0.2 12 4 13 36 41 Trona 48 44 0.2 12 4 11 41 42 Victorville 44 42 0.2 13 5 12 39 43 Yucca Vly 47 45 0.2 23 7 15 42 44 Barstow 49 45 0.2 15 5 21 42 45 Twentynine Palms 45 44 0.2 23 7 14 41 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., OCT. 12, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 43 Ozone Banning Pass Area AQI: 37 Ozone Big Bear Lake AQI: 40 Ozone Central Mojave Desert AQI: 42 Ozone Coastal Area AQI: 39 PM2.5 Hemet/Elsinore Area AQI: 35 Ozone Inland Orange County AQI: 36 Ozone Metropolitan Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 42 Ozone Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 40 Ozone San Bernardino Valley AQI: 39 PM2.5 San Fernando/Santa Clarita Valleys AQI: 35 Ozone San Gabriel Mountains AQI: 33 Ozone San Gabriel Valley AQI: 33 Ozone Temecula/Anza Area AQI: 36 Ozone Victor Valley AQI: 45 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cool and cloudy conditions are expected Monday with light rainfall. Showers may linger into Tuesday morning before drier conditions and warmer temperatures return. Inversion Base: 11398 FT | Breaking Temperature: 93 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 3671 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 MONDAY, OCTOBER 12, 2026 IN THE SOUTH COAST AIR BASIN.