SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., JAN. 17, 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 44 34 0.6 29 13 44 58 2 NW Coastal LA 41 36 0.8 25 9 32 50 3 SW Coastal LA 39 33 0.7 27 16 45 64 4 S Coastal LA 44 32 1.3 56 18 49 68 5 Southeast LA Co 46 34 2.6 28 17 45 66 6 W San Fernando Vly 43 40 0.8 22 4 28 37 7 E San Fernando Vly 42 36 0.8 28 8 41 44 8 W San Gabriel Vly 48 40 0.6 27 8 41 44 9 E San Gabriel Vly 49 40 0.4 10 4 20 37 10 Pomona Walnut Vly 49 36 0.8 23 9 39 50 11 S San Gabriel Vly 45 33 1.0 28 12 42 56 12 S Central LA Co 46 33 2.6 64 21 42 73 13 Santa Clarita Vly 44 41 0.2 23 5 17 38 15 San Gabriel Mts 45 41 0.5 27 6 35 38 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 42 34 0.4 21 9 25 50 Orange County: South Coast Air Basin 16 N Orange Co 49 37 1.0 25 13 40 58 17 Central Orange Co 47 37 1.0 25 14 43 60 18 N Coastal Orange Co 40 30 1.1 23 14 45 60 19 Saddleback Vly 47 42 0.4 23 7 37 39 20 Central Coastal 44 37 0.7 20 7 33 39 21 Capistrano Vly 47 42 0.4 17 7 26 39 Riverside County: South Coast Air Basin 22 Norco/Corona 46 40 0.7 24 7 35 39 23 Metro Riverside Co 43 39 0.7 27 10 31 53 24 Perris Vly 43 38 0.6 29 5 27 35 25 Lake Elsinore 44 41 0.3 17 3 22 38 26 Temecula Vly 44 40 0.3 19 3 20 37 27 Anza Vly 45 42 0.3 22 3 17 39 28 Hemet/San Jacinto 44 41 0.5 25 3 21 38 29 Banning 44 42 0.5 21 3 10 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 47 43 0.2 27 7 15 40 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 40 35 0.2 14 5 13 32 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 55 46 0.7 17 7 28 43 33 SW San Bernardino Vly 47 38 0.9 23 9 39 50 34 C San Bernardino Vly 43 39 0.7 34 6 26 36 35 E San Bernardino Vly 42 38 0.6 31 5 29 35 36 W San Bernardino Mtns 48 44 0.6 23 4 27 41 37 C San Bernardino Mtns 44 42 0.6 32 4 30 39 38 Big Bear Lake 47 45 0.6 27 8 26 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 46 44 0.5 24 5 33 41 40 Hesperia 42 36 0.5 27 6 34 33 41 Trona 30 23 0.3 18 4 13 22 42 Victorville 43 36 0.5 25 8 35 44 43 Yucca Vly 45 43 0.3 12 4 22 40 44 Barstow 39 27 0.4 15 5 43 41 45 Twentynine Palms 42 39 0.3 13 4 20 36 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., JAN. 17, 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 Big Bear Lake AQI: 44 PM2.5 Central Mojave Desert AQI: 40 Ozone Coachella Valley/Low Desert AQI: 40 Ozone Hemet/Elsinore Area AQI: 38 Ozone Northern Mojave Desert AQI: 41 NO2 San Bernardino Mountains AQI: 41 Ozone San Bernardino Valley AQI: 50 PM2.5 San Fernando/Santa Clarita Valleys AQI: 44 PM2.5 San Gabriel Mountains AQI: 38 Ozone Temecula/Anza Area AQI: 39 Ozone Victor Valley AQI: 44 PM2.5 MODERATE in the following area(s): Coastal Area AQI: 68 PM2.5 Inland Orange County AQI: 60 PM2.5 Metropolitan Area AQI: 73 PM2.5 Riverside Valley AQI: 53 PM2.5 San Gabriel Valley AQI: 56 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Santa Ana winds develop, gusting up to 35 mph along and below coastal mountain slopes. Warm and dry, with temperatures 10–15° above average inland. Patchy low clouds and dense fog could return to portion of the coast tonight, but with faster clearing on Saturday morning. Inversion Base: 925 FT | Breaking Temperature: 76 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2809 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, JANUARY 17, 2026 IN THE SOUTH COAST AIR BASIN.