SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., SEP. 06, 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 44 34 0.7 21 8 27 44 2 NW Coastal LA 38 31 0.4 20 7 18 39 3 SW Coastal LA 36 30 0.2 22 7 24 39 4 S Coastal LA 40 33 0.7 25 6 34 33 5 Southeast LA Co 40 33 0.6 27 8 28 44 6 W San Fernando Vly 42 36 0.5 20 5 15 33 7 E San Fernando Vly 44 35 0.5 22 7 22 39 8 W San Gabriel Vly 48 37 0.4 27 7 19 39 9 E San Gabriel Vly 68 57 0.7 33 7 24 58 10 Pomona Walnut Vly 44 35 0.6 36 10 31 53 11 S San Gabriel Vly 39 32 0.6 30 9 22 50 12 S Central LA Co 40 33 0.3 23 7 22 39 13 Santa Clarita Vly 46 37 0.3 21 8 16 44 15 San Gabriel Mts 46 38 0.5 34 6 22 35 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 43 38 0.4 23 8 23 44 Orange County: South Coast Air Basin 16 N Orange Co 42 35 0.2 33 9 20 50 17 Central Orange Co 38 32 0.7 26 8 22 44 18 N Coastal Orange Co 39 34 0.7 25 5 30 31 19 Saddleback Vly 43 39 0.3 32 3 23 36 20 Central Coastal 42 37 0.4 25 6 21 34 21 Capistrano Vly 40 36 0.4 24 7 18 39 Riverside County: South Coast Air Basin 22 Norco/Corona 47 40 0.5 40 8 26 44 23 Metro Riverside Co 76 62 0.6 42 10 26 74 24 Perris Vly 68 63 0.6 31 9 24 77 25 Lake Elsinore 38 33 0.4 24 8 16 44 26 Temecula Vly 35 31 0.3 27 5 15 29 27 Anza Vly 35 33 0.3 31 3 13 31 28 Hemet/San Jacinto 41 39 0.5 30 6 24 36 29 Banning 38 36 0.4 30 6 22 33 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 44 37 0.2 35 8 12 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 37 36 0.2 24 5 12 33 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 38 31 0.6 37 10 22 53 33 SW San Bernardino Vly 43 35 0.6 40 10 30 53 34 C San Bernardino Vly 44 35 0.6 30 8 35 44 35 E San Bernardino Vly 48 41 0.6 33 6 26 38 36 W San Bernardino Mtns 40 34 0.5 34 6 28 33 37 C San Bernardino Mtns 48 38 0.6 29 4 29 35 38 Big Bear Lake 41 38 0.5 29 4 26 35 San Bernardino County: Mojave Desert Air Basin 39 Phelan 37 35 0.5 24 4 26 32 40 Hesperia 41 35 0.5 14 4 29 32 41 Trona 45 41 0.3 15 4 10 38 42 Victorville 44 38 0.5 20 6 26 35 43 Yucca Vly 46 40 0.3 28 5 20 37 44 Barstow 51 37 0.4 24 6 40 38 45 Twentynine Palms 39 35 0.3 26 6 19 33 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., SEP. 06, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 44 PM2.5 Banning Pass Area AQI: 33 PM2.5 Big Bear Lake AQI: 35 Ozone Central Mojave Desert AQI: 37 Ozone Coachella Valley/Low Desert AQI: 44 PM2.5 Coastal Area AQI: 39 PM2.5 Inland Orange County AQI: 44 PM2.5 Metropolitan Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 38 Ozone San Bernardino Mountains AQI: 35 Ozone San Fernando/Santa Clarita Valleys AQI: 44 PM2.5 San Gabriel Mountains AQI: 35 Ozone Temecula/Anza Area AQI: 31 Ozone Victor Valley AQI: 35 Ozone MODERATE in the following area(s): Hemet/Elsinore Area AQI: 77 Ozone Riverside Valley AQI: 74 Ozone San Bernardino Valley AQI: 53 PM2.5 San Gabriel Valley AQI: 58 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cloudy and cooler conditions are expected Sunday with periods of light to locally moderate rain, mainly during the morning. A slight chance of thunderstorms is possible, especially over the San Bernardino Mountains and High Desert. Inversion Base: 798 FT | Breaking Temperature: 82 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 878 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 SUNDAY, SEPTEMBER 06, 2026 IN THE SOUTH COAST AIR BASIN.