SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., JUN. 27, 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 47 0.3 24 9 17 50 2 NW Coastal LA 48 40 0.2 24 8 8 44 3 SW Coastal LA 43 36 0.2 24 7 13 39 4 S Coastal LA 47 40 0.2 25 6 15 37 5 Southeast LA Co 50 44 0.3 27 8 14 44 6 W San Fernando Vly 53 48 0.3 24 8 9 44 7 E San Fernando Vly 59 52 0.3 26 9 13 50 8 W San Gabriel Vly 54 49 0.3 28 10 9 53 9 E San Gabriel Vly 59 52 0.3 32 11 13 55 10 Pomona Walnut Vly 59 52 0.3 40 10 15 53 11 S San Gabriel Vly 54 48 0.2 29 9 13 50 12 S Central LA Co 49 42 0.2 24 7 9 39 13 Santa Clarita Vly 56 53 0.2 27 10 10 53 15 San Gabriel Mts 57 52 0.3 38 11 13 55 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 58 55 0.2 32 11 10 55 Orange County: South Coast Air Basin 16 N Orange Co 48 43 0.1 33 7 9 40 17 Central Orange Co 45 41 0.2 25 7 7 39 18 N Coastal Orange Co 46 40 0.2 24 5 12 37 19 Saddleback Vly 49 43 0.2 32 4 8 40 20 Central Coastal 48 41 0.2 23 5 8 38 21 Capistrano Vly 46 39 0.2 38 5 6 36 Riverside County: South Coast Air Basin 22 Norco/Corona 50 46 0.2 41 8 9 44 23 Metro Riverside Co 55 52 0.3 43 9 9 50 24 Perris Vly 50 48 0.2 33 7 12 44 25 Lake Elsinore 45 40 0.2 18 7 5 39 26 Temecula Vly 40 37 0.2 61 6 5 54 27 Anza Vly 44 42 0.2 76 5 5 61 28 Hemet/San Jacinto 47 45 0.2 48 6 12 44 29 Banning 53 50 0.2 60 10 9 53 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 60 54 0.2 150 10 5 98 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 42 0.2 47 8 6 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 61 55 0.3 44 12 14 56 33 SW San Bernardino Vly 55 50 0.3 42 10 14 53 34 C San Bernardino Vly 60 56 0.2 36 10 15 54 35 E San Bernardino Vly 60 55 0.3 34 10 14 53 36 W San Bernardino Mtns 60 56 0.2 38 11 17 55 37 C San Bernardino Mtns 66 60 0.2 34 7 18 67 38 Big Bear Lake 57 55 0.2 33 4 14 50 San Bernardino County: Mojave Desert Air Basin 39 Phelan 57 54 0.2 29 10 20 53 40 Hesperia 59 56 0.2 21 10 21 54 41 Trona 54 49 0.2 46 5 20 45 42 Victorville 62 58 0.2 28 10 22 61 43 Yucca Vly 54 51 0.2 33 5 8 47 44 Barstow 66 60 0.2 33 7 15 67 45 Twentynine Palms 53 50 0.2 36 6 8 46 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., JUN. 27, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Central Mojave Desert AQI: 47 Ozone Coastal Area AQI: 44 PM2.5 Hemet/Elsinore Area AQI: 44 Ozone Inland Orange County AQI: 40 Ozone Metropolitan Area AQI: 50 PM2.5 Riverside Valley AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 55 PM2.5 Banning Pass Area AQI: 53 PM10 Big Bear Lake AQI: 51 Ozone Coachella Valley/Low Desert AQI: 98 PM10 Northern Mojave Desert AQI: 67 Ozone San Bernardino Mountains AQI: 67 Ozone San Bernardino Valley AQI: 56 PM2.5 San Fernando/Santa Clarita Valleys AQI: 53 PM2.5 San Gabriel Mountains AQI: 55 PM2.5 San Gabriel Valley AQI: 55 PM2.5 Temecula/Anza Area AQI: 61 PM10 Victor Valley AQI: 61 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures will decrease and the marine layer will deepen. High wind gusts in the Coachella Valley are predicted to occur in the evenings and overnight. Inversion Base: 3023 FT | Breaking Temperature: 79 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 3256 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 SATURDAY, JUNE 27, 2026 IN THE SOUTH COAST AIR BASIN.