SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., OCT. 13, 2025 -------------------------------------------------------------------------------- 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 46 42 0.5 26 7 15 39 2 NW Coastal LA 45 40 0.4 23 7 11 39 3 SW Coastal LA 43 38 0.2 24 7 11 39 4 S Coastal LA 49 42 0.2 22 7 15 39 5 Southeast LA Co 44 40 0.4 24 7 16 39 6 W San Fernando Vly 45 41 0.2 20 7 10 39 7 E San Fernando Vly 53 48 0.4 25 7 12 44 8 W San Gabriel Vly 46 42 0.2 25 7 10 39 9 E San Gabriel Vly 42 41 0.3 21 8 19 44 10 Pomona Walnut Vly 44 42 0.4 29 8 13 44 11 S San Gabriel Vly 45 42 0.2 24 7 13 39 12 S Central LA Co 49 42 0.2 24 8 16 44 13 Santa Clarita Vly 48 43 0.2 19 8 12 44 15 San Gabriel Mts 48 45 0.3 28 8 15 44 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 50 46 0.2 15 10 14 53 Orange County: South Coast Air Basin 16 N Orange Co 40 37 0.1 23 7 7 39 17 Central Orange Co 38 36 0.2 15 7 9 39 18 N Coastal Orange Co 44 41 0.2 17 6 13 38 19 Saddleback Vly 42 42 0.2 22 7 10 39 20 Central Coastal 43 40 0.2 13 6 9 37 21 Capistrano Vly 41 39 0.2 18 6 7 36 Riverside County: South Coast Air Basin 22 Norco/Corona 46 43 0.4 32 7 12 40 23 Metro Riverside Co 49 44 0.6 34 9 15 50 24 Perris Vly 43 41 0.4 31 7 17 39 25 Lake Elsinore 47 44 0.2 12 7 6 41 26 Temecula Vly 45 42 0.2 27 7 8 39 27 Anza Vly 49 48 0.2 33 6 9 44 28 Hemet/San Jacinto 46 45 0.3 29 7 16 42 29 Banning 50 48 0.3 28 6 10 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 54 51 0.2 50 9 12 50 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 45 0.2 31 6 10 42 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 43 38 0.3 32 10 9 53 33 SW San Bernardino Vly 45 41 0.4 33 9 19 50 34 C San Bernardino Vly 45 40 0.3 35 8 25 44 35 E San Bernardino Vly 46 42 0.5 33 7 19 39 36 W San Bernardino Mtns 49 44 0.3 30 8 18 44 37 C San Bernardino Mtns 50 48 0.3 33 6 21 44 38 Big Bear Lake 50 48 0.3 32 6 21 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 60 55 0.2 23 6 17 51 40 Hesperia 53 50 0.2 23 8 21 46 41 Trona 49 44 0.1 17 6 7 41 42 Victorville 55 52 0.2 24 9 18 50 43 Yucca Vly 52 50 0.2 37 6 18 46 44 Barstow 59 55 0.2 29 8 36 51 45 Twentynine Palms 49 48 0.2 35 6 16 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., OCT. 13, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 44 Ozone Central Mojave Desert AQI: 46 Ozone Coachella Valley/Low Desert AQI: 50 PM2.5 Coastal Area AQI: 39 PM2.5 Hemet/Elsinore Area AQI: 42 Ozone Inland Orange County AQI: 39 PM2.5 Metropolitan Area AQI: 44 PM2.5 Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 44 PM2.5 San Fernando/Santa Clarita Valleys AQI: 44 PM2.5 San Gabriel Mountains AQI: 44 PM2.5 San Gabriel Valley AQI: 44 PM2.5 Temecula/Anza Area AQI: 44 Ozone MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Northern Mojave Desert AQI: 51 Ozone San Bernardino Valley AQI: 53 PM2.5 Victor Valley AQI: 51 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with areas of morning low clouds and fog. Decreasing temperatures expected. Inversion Base: 2832 FT | Breaking Temperature: 69 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 3476 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 13, 2025 IN THE SOUTH COAST AIR BASIN.