SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., JUN. 28, 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 53 48 0.5 23 9 13 50 2 NW Coastal LA 51 43 0.3 22 7 10 40 3 SW Coastal LA 44 37 0.1 22 7 6 39 4 S Coastal LA 50 45 0.2 20 7 11 42 5 Southeast LA Co 47 44 0.4 22 7 17 41 6 W San Fernando Vly 54 48 0.3 21 7 7 44 7 E San Fernando Vly 61 54 0.4 24 8 11 50 8 W San Gabriel Vly 50 46 0.3 24 8 10 44 9 E San Gabriel Vly 58 51 0.3 23 6 12 47 10 Pomona Walnut Vly 48 43 0.3 38 7 12 40 11 S San Gabriel Vly 48 45 0.3 23 7 17 42 12 S Central LA Co 49 45 0.3 22 8 11 44 13 Santa Clarita Vly 57 52 0.2 24 10 8 53 15 San Gabriel Mts 56 51 0.2 38 8 11 47 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 62 58 0.2 28 8 6 61 Orange County: South Coast Air Basin 16 N Orange Co 46 43 0.1 23 6 8 40 17 Central Orange Co 43 40 0.3 13 7 6 39 18 N Coastal Orange Co 45 43 0.2 16 6 10 40 19 Saddleback Vly 43 40 0.1 21 4 7 37 20 Central Coastal 43 40 0.2 14 5 6 37 21 Capistrano Vly 40 38 0.2 22 5 5 35 Riverside County: South Coast Air Basin 22 Norco/Corona 49 44 0.3 31 6 8 41 23 Metro Riverside Co 56 48 0.6 31 8 8 44 24 Perris Vly 50 44 0.3 24 6 10 41 25 Lake Elsinore 46 39 0.2 12 4 4 36 26 Temecula Vly 39 35 0.2 34 6 4 33 27 Anza Vly 47 44 0.2 43 5 4 41 28 Hemet/San Jacinto 47 43 0.3 33 5 9 40 29 Banning 54 50 0.2 33 4 5 46 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 64 60 0.2 57 10 3 67 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 54 50 0.1 30 8 4 46 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 45 41 0.2 47 9 8 50 33 SW San Bernardino Vly 48 43 0.3 41 7 11 40 34 C San Bernardino Vly 61 54 0.3 22 7 14 50 35 E San Bernardino Vly 56 50 0.4 29 6 12 46 36 W San Bernardino Mtns 54 50 0.2 38 9 13 50 37 C San Bernardino Mtns 61 54 0.3 29 6 15 50 38 Big Bear Lake 60 54 0.3 30 5 11 50 San Bernardino County: Mojave Desert Air Basin 39 Phelan 57 55 0.2 28 6 15 51 40 Hesperia 61 57 0.2 26 7 16 58 41 Trona 55 53 0.1 18 4 17 49 42 Victorville 61 58 0.2 27 8 17 61 43 Yucca Vly 57 55 0.2 31 6 5 51 44 Barstow 59 56 0.2 20 6 10 54 45 Twentynine Palms 59 57 0.2 29 7 5 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., JUN. 28, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 46 Ozone Big Bear Lake AQI: 50 Ozone Coastal Area AQI: 42 Ozone Hemet/Elsinore Area AQI: 41 Ozone Inland Orange County AQI: 39 PM2.5 Metropolitan Area AQI: 50 PM2.5 Riverside Valley AQI: 44 PM2.5 San Bernardino Mountains AQI: 50 PM2.5 San Bernardino Valley AQI: 50 PM2.5 San Gabriel Mountains AQI: 47 Ozone San Gabriel Valley AQI: 47 Ozone Temecula/Anza Area AQI: 41 Ozone MODERATE in the following area(s): Antelope Valley AQI: 61 Ozone Central Mojave Desert AQI: 58 Ozone Coachella Valley/Low Desert AQI: 67 Ozone Northern Mojave Desert AQI: 54 Ozone San Fernando/Santa Clarita Valleys AQI: 53 PM2.5 Victor Valley AQI: 61 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures are lower than average with onshore flow and a deep marine layer overnight and through the morning. Winds may gust up to 75 mph in the San Gorgonio Pass and Western Coachella Valley. Inversion Base: 3745 FT | Breaking Temperature: 81 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 3890 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 Above 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, JUNE 28, 2026 IN THE SOUTH COAST AIR BASIN.