SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., OCT. 15, 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 45 41 0.6 22 7 32 39 2 NW Coastal LA 44 40 0.6 20 7 26 39 3 SW Coastal LA 40 37 0.5 20 6 29 34 4 S Coastal LA 45 42 0.8 19 8 31 44 5 Southeast LA Co 46 42 1.0 21 8 32 44 6 W San Fernando Vly 52 49 0.6 18 6 22 45 7 E San Fernando Vly 52 48 0.6 21 6 28 44 8 W San Gabriel Vly 48 43 0.4 21 6 26 40 9 E San Gabriel Vly 53 45 0.4 20 6 26 42 10 Pomona Walnut Vly 54 47 0.6 22 8 32 44 11 S San Gabriel Vly 46 42 0.5 21 8 30 44 12 S Central LA Co 44 41 1.0 20 8 32 44 13 Santa Clarita Vly 52 50 0.4 19 5 17 46 15 San Gabriel Mts 53 50 0.5 21 5 27 46 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 51 48 0.4 19 6 21 44 Orange County: South Coast Air Basin 16 N Orange Co 45 41 0.5 24 8 24 44 17 Central Orange Co 39 36 0.5 17 8 26 44 18 N Coastal Orange Co 46 44 0.7 17 7 28 41 19 Saddleback Vly 48 45 0.3 24 6 24 42 20 Central Coastal 48 45 0.4 15 6 21 42 21 Capistrano Vly 50 46 0.3 19 5 17 43 Riverside County: South Coast Air Basin 22 Norco/Corona 52 47 0.5 33 9 26 50 23 Metro Riverside Co 52 48 0.6 38 11 26 55 24 Perris Vly 48 44 0.5 24 8 26 44 25 Lake Elsinore 52 47 0.4 14 5 15 44 26 Temecula Vly 48 44 0.3 26 4 14 41 27 Anza Vly 49 46 0.3 32 4 14 43 28 Hemet/San Jacinto 50 47 0.4 24 6 24 44 29 Banning 50 48 0.4 20 5 21 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 51 49 0.2 50 5 14 46 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 45 0.2 29 4 12 42 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 47 42 0.4 16 7 32 39 33 SW San Bernardino Vly 52 47 0.5 33 9 31 50 34 C San Bernardino Vly 51 45 0.5 23 8 29 44 35 E San Bernardino Vly 49 44 0.5 26 8 27 44 36 W San Bernardino Mtns 51 46 0.4 18 5 30 43 37 C San Bernardino Mtns 55 47 0.5 22 4 29 44 38 Big Bear Lake 50 47 0.4 25 4 26 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 48 48 0.4 18 4 28 44 40 Hesperia 49 45 0.4 16 4 29 42 41 Trona 45 42 0.2 9 4 9 39 42 Victorville 50 47 0.4 18 4 29 44 43 Yucca Vly 49 47 0.3 33 4 19 44 44 Barstow 48 44 0.3 21 4 33 41 45 Twentynine Palms 49 47 0.2 32 4 18 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., OCT. 15, 2025, 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: 44 Ozone Big Bear Lake AQI: 44 Ozone Central Mojave Desert AQI: 44 Ozone Coachella Valley/Low Desert AQI: 46 PM10 Coastal Area AQI: 44 PM2.5 Hemet/Elsinore Area AQI: 44 PM2.5 Inland Orange County AQI: 44 PM2.5 Metropolitan Area AQI: 44 PM2.5 Northern Mojave Desert AQI: 41 Ozone San Bernardino Mountains AQI: 44 Ozone San Bernardino Valley AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 46 Ozone San Gabriel Mountains AQI: 46 Ozone San Gabriel Valley AQI: 44 PM2.5 Temecula/Anza Area AQI: 43 Ozone Victor Valley AQI: 44 Ozone MODERATE in the following area(s): Riverside Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny with increasing temperatures expected. Inversion Base: 6957 FT | Breaking Temperature: 79 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 5361 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 WEDNESDAY, OCTOBER 15, 2025 IN THE SOUTH COAST AIR BASIN.