SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., JAN. 21, 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 24 17 0.7 40 21 46 73 2 NW Coastal LA 36 25 0.9 34 20 39 71 3 SW Coastal LA 40 24 1.0 37 19 35 69 4 S Coastal LA 37 29 1.3 36 17 49 66 5 Southeast LA Co 32 24 1.8 39 24 44 79 6 W San Fernando Vly 34 28 1.2 29 13 35 58 7 E San Fernando Vly 25 18 1.1 38 18 47 68 8 W San Gabriel Vly 29 21 0.7 37 20 48 71 9 E San Gabriel Vly 32 27 0.8 28 13 43 58 10 Pomona Walnut Vly 34 24 0.9 40 20 49 71 11 S San Gabriel Vly 29 19 1.1 39 24 42 79 12 S Central LA Co 33 26 1.8 38 21 37 73 13 Santa Clarita Vly 40 32 0.5 29 10 36 53 15 San Gabriel Mts 37 29 0.9 35 14 45 60 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 34 28 0.7 22 12 30 56 Orange County: South Coast Air Basin 16 N Orange Co 37 26 0.8 47 24 35 79 17 Central Orange Co 42 32 1.0 37 23 38 77 18 N Coastal Orange Co 46 39 1.2 34 9 44 50 19 Saddleback Vly 47 42 0.5 47 14 38 60 20 Central Coastal 46 42 0.7 32 17 34 66 21 Capistrano Vly 45 42 0.6 31 17 30 66 Riverside County: South Coast Air Basin 22 Norco/Corona 44 38 1.0 62 24 41 79 23 Metro Riverside Co 38 32 1.1 70 24 41 79 24 Perris Vly 41 35 0.9 45 14 43 60 25 Lake Elsinore 47 40 0.7 31 9 29 50 26 Temecula Vly 42 38 0.6 29 6 28 35 27 Anza Vly 42 40 0.5 26 5 29 37 28 Hemet/San Jacinto 42 39 0.8 27 7 42 40 29 Banning 44 41 0.8 20 5 37 38 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 42 0.3 28 7 33 39 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 37 34 0.3 16 5 22 31 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 31 26 1.0 22 17 45 66 33 SW San Bernardino Vly 35 27 1.1 59 22 50 75 34 C San Bernardino Vly 34 27 1.1 23 15 55 62 35 E San Bernardino Vly 39 33 1.0 43 11 45 55 36 W San Bernardino Mtns 36 31 0.9 25 11 46 55 37 C San Bernardino Mtns 44 37 1.0 28 7 46 43 38 Big Bear Lake 46 43 0.9 22 11 43 55 San Bernardino County: Mojave Desert Air Basin 39 Phelan 43 40 0.8 29 6 36 37 40 Hesperia 38 32 0.9 32 10 42 53 41 Trona 27 22 0.5 25 5 13 28 42 Victorville 37 29 0.8 31 11 33 55 43 Yucca Vly 43 42 0.5 16 5 33 39 44 Barstow 35 25 0.6 22 5 41 39 45 Twentynine Palms 37 34 0.4 15 5 30 31 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., JAN. 21, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 38 Ozone Central Mojave Desert AQI: 39 Ozone Coachella Valley/Low Desert AQI: 39 PM2.5 Northern Mojave Desert AQI: 39 NO2 Temecula/Anza Area AQI: 37 Ozone MODERATE in the following area(s): Antelope Valley AQI: 56 PM2.5 Big Bear Lake AQI: 55 PM2.5 Coastal Area AQI: 71 PM2.5 Hemet/Elsinore Area AQI: 60 PM2.5 Inland Orange County AQI: 77 PM2.5 Metropolitan Area AQI: 79 PM2.5 Riverside Valley AQI: 79 PM2.5 San Bernardino Mountains AQI: 55 PM2.5 San Bernardino Valley AQI: 75 PM2.5 San Fernando/Santa Clarita Valleys AQI: 68 PM2.5 San Gabriel Mountains AQI: 60 PM2.5 San Gabriel Valley AQI: 79 PM2.5 Victor Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Partly cloudy skies are expected, with temperatures decreasing. Inversion Base: 486 FT | Breaking Temperature: 64 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1867 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 WEDNESDAY, JANUARY 21, 2026 IN THE SOUTH COAST AIR BASIN.