SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., OCT. 30, 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 42 38 0.9 19 6 24 35 2 NW Coastal LA 36 34 0.4 17 5 16 31 3 SW Coastal LA 37 35 0.2 17 6 21 33 4 S Coastal LA 45 41 0.3 16 7 25 39 5 Southeast LA Co 43 37 0.6 18 7 26 39 6 W San Fernando Vly 42 40 0.3 15 5 13 37 7 E San Fernando Vly 43 40 0.6 18 6 19 37 8 W San Gabriel Vly 44 40 0.3 18 6 15 37 9 E San Gabriel Vly 51 45 0.4 13 6 19 42 10 Pomona Walnut Vly 49 43 0.3 29 6 20 40 11 S San Gabriel Vly 41 36 0.3 18 6 26 33 12 S Central LA Co 43 38 0.3 17 7 24 39 13 Santa Clarita Vly 47 41 0.2 16 5 16 38 15 San Gabriel Mts 47 42 0.3 28 6 23 39 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 50 46 0.2 14 7 26 43 Orange County: South Coast Air Basin 16 N Orange Co 42 36 0.2 18 6 17 33 17 Central Orange Co 45 40 0.3 13 6 20 37 18 N Coastal Orange Co 42 39 0.3 14 4 23 36 19 Saddleback Vly 41 38 0.2 16 4 18 35 20 Central Coastal 40 38 0.2 11 4 16 35 21 Capistrano Vly 41 39 0.2 11 4 13 36 Riverside County: South Coast Air Basin 22 Norco/Corona 50 44 0.4 22 6 17 41 23 Metro Riverside Co 54 47 0.7 21 8 15 44 24 Perris Vly 48 43 0.4 19 6 19 40 25 Lake Elsinore 46 41 0.2 12 6 11 38 26 Temecula Vly 45 42 0.2 14 4 11 39 27 Anza Vly 48 46 0.2 16 4 12 43 28 Hemet/San Jacinto 49 45 0.2 18 5 17 42 29 Banning 52 48 0.2 17 5 9 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 53 51 0.1 44 6 14 47 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 49 45 0.1 22 5 12 42 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 54 49 0.4 38 5 19 45 33 SW San Bernardino Vly 51 45 0.4 32 7 23 42 34 C San Bernardino Vly 52 47 0.2 22 6 27 44 35 E San Bernardino Vly 54 48 0.5 21 7 21 44 36 W San Bernardino Mtns 52 48 0.3 29 5 24 44 37 C San Bernardino Mtns 52 49 0.2 23 4 26 45 38 Big Bear Lake 51 50 0.2 23 7 20 46 San Bernardino County: Mojave Desert Air Basin 39 Phelan 52 50 0.2 18 5 27 46 40 Hesperia 51 49 0.2 16 5 27 45 41 Trona 51 48 0.1 16 7 13 44 42 Victorville 52 50 0.2 17 6 28 46 43 Yucca Vly 56 51 0.2 29 5 18 47 44 Barstow 54 48 0.2 20 7 30 44 45 Twentynine Palms 49 48 0.1 28 6 17 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., OCT. 30, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 43 Ozone Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 46 Ozone Central Mojave Desert AQI: 47 Ozone Coachella Valley/Low Desert AQI: 47 Ozone Coastal Area AQI: 39 PM2.5 Hemet/Elsinore Area AQI: 42 Ozone Inland Orange County AQI: 37 Ozone Metropolitan Area AQI: 39 PM2.5 Northern Mojave Desert AQI: 44 Ozone Riverside Valley AQI: 44 PM2.5 San Bernardino Mountains AQI: 45 Ozone San Bernardino Valley AQI: 45 Ozone San Fernando/Santa Clarita Valleys AQI: 38 Ozone San Gabriel Mountains AQI: 39 Ozone San Gabriel Valley AQI: 42 Ozone Temecula/Anza Area AQI: 43 Ozone Victor Valley AQI: 46 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Cooling trend continues on Friday with temperatures dropping 1-3 degrees below Thursday. Clouds will roll in as the day progresses. Inversion Base: 6087 FT | Breaking Temperature: 84 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 4758 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 FRIDAY, OCTOBER 30, 2026 IN THE SOUTH COAST AIR BASIN.