SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., JAN. 20, 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 38 28 0.6 27 14 44 60 2 NW Coastal LA 41 32 0.8 25 16 34 64 3 SW Coastal LA 36 29 0.9 26 20 39 71 4 S Coastal LA 46 37 1.5 29 17 51 66 5 Southeast LA Co 42 32 2.2 30 17 51 66 6 W San Fernando Vly 45 38 1.2 22 7 37 39 7 E San Fernando Vly 42 33 1.0 27 9 41 50 8 W San Gabriel Vly 44 35 0.8 26 9 41 50 9 E San Gabriel Vly 46 38 0.6 13 8 43 44 10 Pomona Walnut Vly 43 34 0.9 30 13 46 58 11 S San Gabriel Vly 41 29 1.1 29 14 51 60 12 S Central LA Co 44 34 2.2 28 20 48 71 13 Santa Clarita Vly 43 38 0.3 23 5 19 35 15 San Gabriel Mts 44 38 0.7 26 5 39 37 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 42 33 0.5 22 9 31 50 Orange County: South Coast Air Basin 16 N Orange Co 42 34 0.9 35 16 44 64 17 Central Orange Co 43 35 1.1 31 18 43 68 18 N Coastal Orange Co 52 45 1.4 28 15 47 62 19 Saddleback Vly 52 44 0.5 35 11 41 55 20 Central Coastal 53 45 0.8 25 17 35 66 21 Capistrano Vly 51 44 0.5 22 16 29 64 Riverside County: South Coast Air Basin 22 Norco/Corona 46 40 0.9 42 16 44 64 23 Metro Riverside Co 48 39 0.9 48 16 44 64 24 Perris Vly 46 39 0.8 30 8 36 44 25 Lake Elsinore 48 40 0.5 21 5 25 37 26 Temecula Vly 43 38 0.4 20 5 24 35 27 Anza Vly 46 42 0.4 20 2 25 39 28 Hemet/San Jacinto 46 42 0.7 22 3 34 39 29 Banning 46 42 0.7 20 2 35 39 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 46 41 0.4 23 6 25 38 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 40 35 0.3 15 3 20 32 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 43 37 0.8 17 10 41 53 33 SW San Bernardino Vly 42 35 0.9 42 15 45 62 34 C San Bernardino Vly 43 36 0.9 26 7 44 42 35 E San Bernardino Vly 46 40 0.8 31 6 38 37 36 W San Bernardino Mtns 45 40 0.8 24 5 40 38 37 C San Bernardino Mtns 43 39 0.9 28 6 36 36 38 Big Bear Lake 49 46 0.8 23 14 34 60 San Bernardino County: Mojave Desert Air Basin 39 Phelan 46 44 0.7 27 7 35 41 40 Hesperia 40 35 0.7 31 8 36 44 41 Trona 33 27 0.4 17 4 14 25 42 Victorville 41 34 0.7 30 11 36 55 43 Yucca Vly 45 42 0.5 17 4 29 39 44 Barstow 41 27 0.5 26 5 40 38 45 Twentynine Palms 41 37 0.4 16 3 26 34 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., JAN. 20, 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: 39 Ozone Central Mojave Desert AQI: 39 Ozone Coachella Valley/Low Desert AQI: 38 Ozone Hemet/Elsinore Area AQI: 44 PM2.5 Northern Mojave Desert AQI: 38 NO2 San Bernardino Mountains AQI: 38 NO2 San Fernando/Santa Clarita Valleys AQI: 50 PM2.5 San Gabriel Mountains AQI: 37 NO2 Temecula/Anza Area AQI: 39 Ozone MODERATE in the following area(s): Big Bear Lake AQI: 60 PM2.5 Coastal Area AQI: 71 PM2.5 Inland Orange County AQI: 68 PM2.5 Metropolitan Area AQI: 71 PM2.5 Riverside Valley AQI: 64 PM2.5 San Bernardino Valley AQI: 62 PM2.5 San Gabriel Valley AQI: 60 PM2.5 Victor Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Partly cloudy skies becoming mostly sunny with warm temperatures are expected. Inversion Base: 486 FT | Breaking Temperature: 67 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2278 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 TUESDAY, JANUARY 20, 2026 IN THE SOUTH COAST AIR BASIN.