SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., OCT. 12, 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 60 51 0.8 31 8 29 47 2 NW Coastal LA 54 47 0.6 29 8 22 44 3 SW Coastal LA 47 41 0.4 29 8 29 44 4 S Coastal LA 51 44 0.8 31 8 29 44 5 Southeast LA Co 57 49 1.1 32 8 32 45 6 W San Fernando Vly 56 51 0.6 28 7 21 47 7 E San Fernando Vly 64 57 0.6 33 8 27 58 8 W San Gabriel Vly 69 57 0.5 34 8 27 58 9 E San Gabriel Vly 77 61 0.5 33 6 23 71 10 Pomona Walnut Vly 75 58 0.6 39 9 30 61 11 S San Gabriel Vly 60 50 0.6 33 8 31 46 12 S Central LA Co 57 50 1.1 31 9 32 50 13 Santa Clarita Vly 66 54 0.3 33 5 17 50 15 San Gabriel Mts 63 54 0.4 38 7 25 50 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 51 47 0.4 41 10 20 53 Orange County: South Coast Air Basin 16 N Orange Co 63 52 0.5 41 9 22 50 17 Central Orange Co 53 45 0.6 32 8 26 44 18 N Coastal Orange Co 50 44 0.7 30 7 27 41 19 Saddleback Vly 58 54 0.3 41 11 24 55 20 Central Coastal 54 50 0.4 28 9 20 50 21 Capistrano Vly 57 52 0.3 25 9 16 50 Riverside County: South Coast Air Basin 22 Norco/Corona 68 56 0.6 52 11 24 55 23 Metro Riverside Co 72 57 0.6 58 12 30 58 24 Perris Vly 57 53 0.5 40 8 28 49 25 Lake Elsinore 64 55 0.3 25 7 14 51 26 Temecula Vly 54 52 0.3 24 7 14 48 27 Anza Vly 53 50 0.3 23 5 14 46 28 Hemet/San Jacinto 57 54 0.5 33 7 29 50 29 Banning 56 53 0.4 29 6 30 49 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 56 53 0.2 47 6 14 49 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 43 42 0.2 25 5 12 39 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 73 57 0.5 32 10 24 58 33 SW San Bernardino Vly 71 56 0.6 52 11 28 55 34 C San Bernardino Vly 67 55 0.5 40 9 31 51 35 E San Bernardino Vly 63 54 0.5 42 8 29 50 36 W San Bernardino Mtns 64 52 0.5 32 7 28 48 37 C San Bernardino Mtns 52 49 0.5 37 6 30 45 38 Big Bear Lake 55 52 0.5 33 6 29 48 San Bernardino County: Mojave Desert Air Basin 39 Phelan 53 48 0.4 31 5 28 44 40 Hesperia 49 47 0.5 19 7 32 44 41 Trona 46 42 0.3 10 5 8 39 42 Victorville 50 47 0.4 30 8 30 44 43 Yucca Vly 56 54 0.3 35 5 22 50 44 Barstow 49 46 0.4 36 5 43 43 45 Twentynine Palms 46 45 0.3 34 5 20 42 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., OCT. 12, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 49 Ozone Big Bear Lake AQI: 48 Ozone Central Mojave Desert AQI: 50 Ozone Coachella Valley/Low Desert AQI: 49 Ozone Coastal Area AQI: 50 PM2.5 Metropolitan Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 43 Ozone San Bernardino Mountains AQI: 48 Ozone San Gabriel Mountains AQI: 50 Ozone Temecula/Anza Area AQI: 48 Ozone Victor Valley AQI: 44 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Hemet/Elsinore Area AQI: 51 Ozone Inland Orange County AQI: 55 PM2.5 Riverside Valley AQI: 58 Ozone San Bernardino Valley AQI: 58 Ozone San Fernando/Santa Clarita Valleys AQI: 58 Ozone San Gabriel Valley AQI: 71 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny overall, with morning low clouds and patchy fog along the coast. Inversion Base: 486 FT | Breaking Temperature: 64 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2876 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 SUNDAY, OCTOBER 12, 2025 IN THE SOUTH COAST AIR BASIN.