SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., OCT. 24, 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 53 46 1.1 24 8 32 44 2 NW Coastal LA 49 45 0.6 22 7 26 42 3 SW Coastal LA 45 41 0.5 23 7 27 39 4 S Coastal LA 51 46 0.5 24 8 30 44 5 Southeast LA Co 52 46 0.9 24 11 30 55 6 W San Fernando Vly 50 47 0.6 20 6 30 44 7 E San Fernando Vly 53 48 0.8 23 6 29 44 8 W San Gabriel Vly 57 49 0.4 23 6 23 45 9 E San Gabriel Vly 63 52 0.4 15 4 26 48 10 Pomona Walnut Vly 61 50 0.6 25 8 33 46 11 S San Gabriel Vly 53 46 0.7 24 9 29 50 12 S Central LA Co 53 47 0.9 24 11 25 55 13 Santa Clarita Vly 50 47 0.3 20 4 15 44 15 San Gabriel Mts 51 46 0.5 23 4 29 43 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 46 44 0.4 20 9 33 50 Orange County: South Coast Air Basin 16 N Orange Co 56 48 0.5 26 9 22 50 17 Central Orange Co 48 42 0.7 25 8 30 44 18 N Coastal Orange Co 52 47 0.5 23 8 28 44 19 Saddleback Vly 56 51 0.3 25 5 28 47 20 Central Coastal 58 53 0.4 19 7 23 49 21 Capistrano Vly 58 53 0.4 16 6 20 49 Riverside County: South Coast Air Basin 22 Norco/Corona 56 49 0.5 30 8 29 45 23 Metro Riverside Co 57 49 0.7 31 10 32 53 24 Perris Vly 52 49 0.5 28 9 29 50 25 Lake Elsinore 53 50 0.4 13 6 18 46 26 Temecula Vly 47 44 0.3 22 5 17 41 27 Anza Vly 44 43 0.3 26 4 17 40 28 Hemet/San Jacinto 50 47 0.4 25 6 27 44 29 Banning 50 47 0.4 22 3 25 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 49 46 0.2 43 8 16 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 43 41 0.2 25 5 14 38 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 60 50 0.5 27 8 21 46 33 SW San Bernardino Vly 58 49 0.6 30 10 31 53 34 C San Bernardino Vly 50 46 0.5 33 6 35 43 35 E San Bernardino Vly 53 50 0.6 30 5 30 46 36 W San Bernardino Mtns 51 45 0.4 25 4 28 42 37 C San Bernardino Mtns 47 44 0.5 30 4 29 41 38 Big Bear Lake 48 46 0.4 26 5 28 43 San Bernardino County: Mojave Desert Air Basin 39 Phelan 44 43 0.4 18 4 28 40 40 Hesperia 44 42 0.4 16 5 30 39 41 Trona 41 39 0.3 8 3 10 36 42 Victorville 44 42 0.4 17 6 28 39 43 Yucca Vly 46 45 0.3 28 5 24 42 44 Barstow 46 41 0.3 18 4 43 41 45 Twentynine Palms 43 41 0.3 27 5 21 38 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., OCT. 24, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 50 PM2.5 Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 43 Ozone Central Mojave Desert AQI: 42 Ozone Coachella Valley/Low Desert AQI: 44 PM2.5 Coastal Area AQI: 49 Ozone Hemet/Elsinore Area AQI: 50 PM2.5 Inland Orange County AQI: 49 Ozone Northern Mojave Desert AQI: 41 NO2 San Bernardino Mountains AQI: 42 Ozone San Fernando/Santa Clarita Valleys AQI: 44 Ozone San Gabriel Mountains AQI: 43 Ozone San Gabriel Valley AQI: 50 PM2.5 Temecula/Anza Area AQI: 41 Ozone Victor Valley AQI: 40 Ozone MODERATE in the following area(s): Metropolitan Area AQI: 55 PM2.5 Riverside Valley AQI: 53 PM2.5 San Bernardino Valley AQI: 53 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Weak northerly offshore flow is expected on Saturday. High temperatures on Saturday will warm around 5 degrees near the coast and in the deserts to 5 to 10 degrees for the valleys and mountains. Inversion Base: 486 FT | Breaking Temperature: 64 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 4873 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 SATURDAY, OCTOBER 24, 2026 IN THE SOUTH COAST AIR BASIN.