SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., OCT. 02, 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 48 44 0.6 25 11 23 55 2 NW Coastal LA 50 42 0.3 23 9 21 50 3 SW Coastal LA 46 38 0.1 24 7 8 39 4 S Coastal LA 46 41 0.3 22 7 22 39 5 Southeast LA Co 46 42 0.5 24 9 25 50 6 W San Fernando Vly 58 52 0.4 21 9 16 50 7 E San Fernando Vly 55 50 0.4 25 11 20 55 8 W San Gabriel Vly 53 47 0.3 27 11 16 55 9 E San Gabriel Vly 64 53 0.4 32 10 23 53 10 Pomona Walnut Vly 63 52 0.4 32 11 24 55 11 S San Gabriel Vly 49 44 0.4 28 11 25 55 12 S Central LA Co 49 43 0.3 24 8 20 44 13 Santa Clarita Vly 68 58 0.3 21 8 17 61 15 San Gabriel Mts 61 53 0.3 32 9 25 50 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 64 58 0.3 17 6 29 61 Orange County: South Coast Air Basin 16 N Orange Co 47 43 0.2 25 10 16 53 17 Central Orange Co 44 41 0.3 15 9 16 50 18 N Coastal Orange Co 46 42 0.3 18 6 20 39 19 Saddleback Vly 48 44 0.2 24 6 17 41 20 Central Coastal 44 42 0.3 18 5 16 39 21 Capistrano Vly 42 40 0.3 24 4 14 37 Riverside County: South Coast Air Basin 22 Norco/Corona 62 53 0.5 34 12 19 56 23 Metro Riverside Co 70 57 0.8 37 13 24 58 24 Perris Vly 57 52 0.5 34 9 23 50 25 Lake Elsinore 51 46 0.3 19 6 14 43 26 Temecula Vly 47 41 0.2 33 4 13 38 27 Anza Vly 53 48 0.2 39 4 11 44 28 Hemet/San Jacinto 56 51 0.3 32 5 20 47 29 Banning 64 57 0.3 29 6 15 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 64 59 0.2 49 5 10 64 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 53 51 0.2 28 4 10 47 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 64 52 0.4 31 11 19 55 33 SW San Bernardino Vly 61 51 0.4 34 12 23 56 34 C San Bernardino Vly 72 58 0.3 38 11 26 61 35 E San Bernardino Vly 72 60 0.6 36 11 23 67 36 W San Bernardino Mtns 65 53 0.3 31 8 23 49 37 C San Bernardino Mtns 77 61 0.3 36 7 24 71 38 Big Bear Lake 61 57 0.3 33 6 23 58 San Bernardino County: Mojave Desert Air Basin 39 Phelan 59 54 0.3 24 6 24 50 40 Hesperia 59 54 0.3 22 7 26 50 41 Trona 56 51 0.2 22 4 7 47 42 Victorville 60 58 0.3 23 9 24 61 43 Yucca Vly 62 59 0.2 26 5 19 64 44 Barstow 67 60 0.2 27 8 40 67 45 Twentynine Palms 58 55 0.2 27 4 17 51 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., OCT. 02, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 50 PM2.5 Hemet/Elsinore Area AQI: 50 PM2.5 Inland Orange County AQI: 50 PM2.5 San Gabriel Mountains AQI: 50 PM2.5 Temecula/Anza Area AQI: 44 Ozone MODERATE in the following area(s): Antelope Valley AQI: 61 Ozone Banning Pass Area AQI: 58 Ozone Big Bear Lake AQI: 58 Ozone Central Mojave Desert AQI: 64 Ozone Coachella Valley/Low Desert AQI: 64 Ozone Metropolitan Area AQI: 55 PM2.5 Northern Mojave Desert AQI: 67 Ozone Riverside Valley AQI: 58 PM2.5 San Bernardino Mountains AQI: 71 Ozone San Bernardino Valley AQI: 67 Ozone San Fernando/Santa Clarita Valleys AQI: 61 Ozone San Gabriel Valley AQI: 55 PM2.5 Victor Valley AQI: 61 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Light onshore pressure gradients and warming on Thursday. Gusty winds in mountains and east slopes on Friday. Inversion Base: 1635 FT | Breaking Temperature: 73 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2475 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 THURSDAY, OCTOBER 02, 2025 IN THE SOUTH COAST AIR BASIN.