SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., JAN. 18, 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 45 34 0.7 29 13 42 58 2 NW Coastal LA 43 36 0.9 26 13 33 58 3 SW Coastal LA 42 35 0.9 28 18 47 68 4 S Coastal LA 45 33 1.7 57 19 44 69 5 Southeast LA Co 45 35 2.1 32 18 43 68 6 W San Fernando Vly 43 37 1.1 23 7 33 39 7 E San Fernando Vly 44 36 1.0 28 10 40 53 8 W San Gabriel Vly 48 40 0.7 28 10 41 53 9 E San Gabriel Vly 46 40 0.5 14 7 30 39 10 Pomona Walnut Vly 43 35 0.8 32 12 42 56 11 S San Gabriel Vly 46 34 1.0 31 14 41 60 12 S Central LA Co 44 33 2.1 60 24 42 79 13 Santa Clarita Vly 43 39 0.3 25 6 22 36 15 San Gabriel Mts 44 39 0.6 27 7 36 39 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 42 33 0.5 24 11 28 55 Orange County: South Coast Air Basin 16 N Orange Co 49 38 0.9 36 15 39 62 17 Central Orange Co 46 35 1.0 33 15 46 62 18 N Coastal Orange Co 37 28 1.5 30 16 42 64 19 Saddleback Vly 49 39 0.5 36 7 40 39 20 Central Coastal 44 34 0.8 26 7 33 39 21 Capistrano Vly 46 37 0.5 22 7 26 39 Riverside County: South Coast Air Basin 22 Norco/Corona 47 38 0.8 44 13 40 58 23 Metro Riverside Co 44 36 0.9 59 17 39 66 24 Perris Vly 43 37 0.6 32 8 34 44 25 Lake Elsinore 44 38 0.5 20 6 21 35 26 Temecula Vly 43 38 0.4 19 3 21 35 27 Anza Vly 41 39 0.4 20 3 22 36 28 Hemet/San Jacinto 43 40 0.6 27 4 32 37 29 Banning 47 42 0.6 24 4 29 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 44 41 0.3 23 12 23 56 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 37 34 0.3 15 7 19 39 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 55 46 0.7 17 9 33 50 33 SW San Bernardino Vly 44 36 0.9 44 14 42 60 34 C San Bernardino Vly 42 37 0.8 34 8 38 44 35 E San Bernardino Vly 43 37 0.7 33 7 35 39 36 W San Bernardino Mtns 48 43 0.7 26 6 35 40 37 C San Bernardino Mtns 41 38 0.7 33 5 36 35 38 Big Bear Lake 47 44 0.7 29 10 34 53 San Bernardino County: Mojave Desert Air Basin 39 Phelan 45 43 0.6 28 7 35 40 40 Hesperia 36 31 0.6 31 8 36 44 41 Trona 30 25 0.3 23 4 14 23 42 Victorville 38 32 0.6 31 11 36 55 43 Yucca Vly 42 40 0.4 17 7 27 39 44 Barstow 34 22 0.5 27 6 40 38 45 Twentynine Palms 40 38 0.4 16 6 25 35 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., JAN. 18, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 39 Ozone Central Mojave Desert AQI: 39 PM2.5 Hemet/Elsinore Area AQI: 44 PM2.5 Northern Mojave Desert AQI: 38 NO2 San Bernardino Mountains AQI: 40 Ozone San Gabriel Mountains AQI: 39 PM2.5 Temecula/Anza Area AQI: 36 Ozone MODERATE in the following area(s): Antelope Valley AQI: 55 PM2.5 Big Bear Lake AQI: 53 PM2.5 Coachella Valley/Low Desert AQI: 56 PM2.5 Coastal Area AQI: 69 PM2.5 Inland Orange County AQI: 62 PM2.5 Metropolitan Area AQI: 79 PM2.5 Riverside Valley AQI: 66 PM2.5 San Bernardino Valley AQI: 60 PM2.5 San Fernando/Santa Clarita Valleys AQI: 53 PM2.5 San Gabriel Valley AQI: 60 PM2.5 Victor Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Early patchy dense fog along the immediate coast clears quickly. Santa Ana winds continue through the morning, weakening during the afternoon as a sea breeze develops. Warm and dry, with high temperatures 10–15° above average in the valleys, followed by a gradual cooling trend beginning late Sunday and continuing into next week. Inversion Base: 486 FT | Breaking Temperature: 74 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2384 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 SUNDAY, JANUARY 18, 2026 IN THE SOUTH COAST AIR BASIN.