SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., OCT. 09, 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 70 55 0.7 39 12 39 56 2 NW Coastal LA 65 53 0.6 36 11 28 55 3 SW Coastal LA 61 49 0.3 37 11 14 55 4 S Coastal LA 64 50 0.5 40 12 31 56 5 Southeast LA Co 70 54 0.6 41 11 39 55 6 W San Fernando Vly 60 56 0.5 34 9 26 54 7 E San Fernando Vly 60 55 0.6 38 10 33 53 8 W San Gabriel Vly 69 57 0.5 39 10 29 58 9 E San Gabriel Vly 71 62 0.6 38 9 35 74 10 Pomona Walnut Vly 68 57 0.6 46 11 39 58 11 S San Gabriel Vly 75 57 0.4 41 11 39 58 12 S Central LA Co 70 54 0.5 39 11 26 55 13 Santa Clarita Vly 72 63 0.3 36 7 27 77 15 San Gabriel Mts 63 57 0.5 38 8 31 58 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 59 56 0.4 37 11 32 55 Orange County: South Coast Air Basin 16 N Orange Co 71 55 0.3 49 10 24 53 17 Central Orange Co 62 48 0.3 42 10 22 53 18 N Coastal Orange Co 62 51 0.4 39 7 29 47 19 Saddleback Vly 58 52 0.3 49 5 27 48 20 Central Coastal 61 52 0.3 37 6 26 48 21 Capistrano Vly 58 53 0.4 34 6 27 49 Riverside County: South Coast Air Basin 22 Norco/Corona 63 58 0.5 60 12 31 61 23 Metro Riverside Co 72 64 0.6 67 15 37 80 24 Perris Vly 62 57 0.5 45 9 36 58 25 Lake Elsinore 58 54 0.4 34 8 28 50 26 Temecula Vly 56 51 0.4 35 6 25 47 27 Anza Vly 55 51 0.3 38 5 21 47 28 Hemet/San Jacinto 61 56 0.5 34 6 35 54 29 Banning 62 58 0.4 29 5 33 61 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 66 60 0.2 43 9 18 67 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 52 49 0.2 30 5 17 45 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 78 69 0.6 33 11 34 97 33 SW San Bernardino Vly 67 59 0.6 60 13 38 64 34 C San Bernardino Vly 77 65 0.5 34 10 43 84 35 E San Bernardino Vly 75 63 0.6 43 7 37 77 36 W San Bernardino Mtns 70 62 0.5 33 8 36 74 37 C San Bernardino Mtns 71 62 0.5 33 5 36 74 38 Big Bear Lake 65 61 0.5 31 6 35 71 San Bernardino County: Mojave Desert Air Basin 39 Phelan 54 51 0.5 32 6 30 47 40 Hesperia 57 55 0.5 24 7 34 51 41 Trona 58 50 0.3 38 5 16 46 42 Victorville 59 54 0.5 33 9 28 50 43 Yucca Vly 61 58 0.3 30 7 27 61 44 Barstow 64 57 0.4 42 9 47 58 45 Twentynine Palms 57 55 0.3 30 7 25 51 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., OCT. 09, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Temecula/Anza Area AQI: 47 Ozone MODERATE in the following area(s): Antelope Valley AQI: 55 PM2.5 Banning Pass Area AQI: 61 Ozone Big Bear Lake AQI: 71 Ozone Central Mojave Desert AQI: 61 Ozone Coachella Valley/Low Desert AQI: 67 Ozone Coastal Area AQI: 56 PM2.5 Hemet/Elsinore Area AQI: 58 Ozone Inland Orange County AQI: 53 PM2.5 Metropolitan Area AQI: 56 PM2.5 Northern Mojave Desert AQI: 58 Ozone Riverside Valley AQI: 80 Ozone San Bernardino Mountains AQI: 74 Ozone San Bernardino Valley AQI: 97 Ozone San Fernando/Santa Clarita Valleys AQI: 77 Ozone San Gabriel Mountains AQI: 58 Ozone San Gabriel Valley AQI: 74 Ozone Victor Valley AQI: 51 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ High temperatures will cool several degrees, with highs mainly in the 70s near the coast and upper 90s to around 100°F in the Inland Empire. Onshore flow bringing more widespread low clouds and locally dense coastal fog during the morning. Inversion Base: 486 FT | Breaking Temperature: 82 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1910 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: NO-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 FRIDAY, OCTOBER 09, 2026 IN THE SOUTH COAST AIR BASIN.