SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., OCT. 13, 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 48 43 0.7 18 8 35 44 2 NW Coastal LA 45 42 0.5 18 6 22 39 3 SW Coastal LA 43 39 0.4 18 7 28 39 4 S Coastal LA 46 41 0.8 19 7 36 39 5 Southeast LA Co 50 43 0.8 20 8 34 44 6 W San Fernando Vly 48 44 0.5 17 5 22 41 7 E San Fernando Vly 47 45 0.6 18 5 29 42 8 W San Gabriel Vly 49 44 0.5 18 5 26 41 9 E San Gabriel Vly 49 45 0.4 17 4 27 42 10 Pomona Walnut Vly 52 47 0.6 28 7 35 44 11 S San Gabriel Vly 51 44 0.6 20 8 30 44 12 S Central LA Co 49 42 0.8 19 9 32 50 13 Santa Clarita Vly 55 45 0.3 18 5 17 42 15 San Gabriel Mts 48 43 0.4 27 4 26 40 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 51 47 0.3 19 7 25 44 Orange County: South Coast Air Basin 16 N Orange Co 50 45 0.5 21 7 22 42 17 Central Orange Co 44 40 0.5 20 7 27 39 18 N Coastal Orange Co 46 42 0.7 19 5 33 39 19 Saddleback Vly 52 48 0.3 21 4 26 44 20 Central Coastal 49 45 0.4 19 5 24 42 21 Capistrano Vly 49 46 0.3 18 5 20 43 Riverside County: South Coast Air Basin 22 Norco/Corona 51 46 0.4 23 8 26 44 23 Metro Riverside Co 51 46 0.4 22 9 25 50 24 Perris Vly 49 45 0.4 29 5 25 42 25 Lake Elsinore 55 47 0.3 18 4 18 44 26 Temecula Vly 47 43 0.3 19 4 17 40 27 Anza Vly 50 47 0.2 20 2 16 44 28 Hemet/San Jacinto 52 47 0.4 26 3 24 44 29 Banning 54 49 0.4 23 2 22 45 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 52 47 0.2 36 2 15 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 41 0.2 22 2 14 38 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 39 36 0.5 34 7 29 39 33 SW San Bernardino Vly 48 44 0.5 30 9 32 50 34 C San Bernardino Vly 47 43 0.5 34 5 33 40 35 E San Bernardino Vly 49 47 0.5 31 4 26 44 36 W San Bernardino Mtns 42 40 0.4 29 4 31 37 37 C San Bernardino Mtns 46 43 0.5 32 2 31 40 38 Big Bear Lake 50 48 0.5 28 3 26 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 47 46 0.4 20 4 31 43 40 Hesperia 46 43 0.4 18 3 32 40 41 Trona 45 43 0.2 13 4 11 40 42 Victorville 49 45 0.4 20 5 33 42 43 Yucca Vly 48 45 0.3 26 2 21 42 44 Barstow 47 43 0.3 19 4 36 40 45 Twentynine Palms 42 40 0.2 25 2 19 37 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., OCT. 13, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 44 Ozone Banning Pass Area AQI: 45 Ozone Big Bear Lake AQI: 44 Ozone Central Mojave Desert AQI: 42 Ozone Coachella Valley/Low Desert AQI: 44 Ozone Coastal Area AQI: 42 Ozone Hemet/Elsinore Area AQI: 44 Ozone Inland Orange County AQI: 44 Ozone Metropolitan Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 40 Ozone Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 40 Ozone San Bernardino Valley AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 42 Ozone San Gabriel Mountains AQI: 40 Ozone San Gabriel Valley AQI: 44 PM2.5 Temecula/Anza Area AQI: 44 Ozone Victor Valley AQI: 43 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with warmer temperatures are expected. Inversion Base: 6931 FT | Breaking Temperature: 88 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 6580 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 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 TUESDAY, OCTOBER 13, 2026 IN THE SOUTH COAST AIR BASIN.