SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., JUN. 25, 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 49 44 0.4 25 13 18 58 2 NW Coastal LA 42 37 0.3 25 9 14 50 3 SW Coastal LA 39 33 0.1 26 7 9 39 4 S Coastal LA 41 38 0.2 29 7 20 39 5 Southeast LA Co 44 41 0.4 29 10 16 53 6 W San Fernando Vly 59 52 0.3 25 10 10 53 7 E San Fernando Vly 58 52 0.3 26 11 15 55 8 W San Gabriel Vly 57 51 0.2 26 12 13 56 9 E San Gabriel Vly 68 62 0.3 25 15 16 74 10 Pomona Walnut Vly 66 59 0.3 39 13 18 64 11 S San Gabriel Vly 50 46 0.3 30 12 16 56 12 S Central LA Co 40 36 0.2 27 9 9 50 13 Santa Clarita Vly 71 65 0.2 27 11 15 84 15 San Gabriel Mts 66 60 0.3 37 11 17 67 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 67 65 0.2 30 12 9 84 Orange County: South Coast Air Basin 16 N Orange Co 46 43 0.1 36 9 11 50 17 Central Orange Co 41 39 0.2 30 9 8 50 18 N Coastal Orange Co 39 36 0.2 28 5 17 33 19 Saddleback Vly 43 40 0.2 35 5 12 37 20 Central Coastal 41 38 0.2 27 5 12 35 21 Capistrano Vly 42 39 0.3 28 6 12 36 Riverside County: South Coast Air Basin 22 Norco/Corona 55 51 0.3 44 10 13 53 23 Metro Riverside Co 68 63 0.3 46 12 13 77 24 Perris Vly 66 62 0.3 32 11 20 74 25 Lake Elsinore 53 48 0.3 22 8 12 44 26 Temecula Vly 46 44 0.2 35 7 12 41 27 Anza Vly 55 52 0.2 40 5 12 48 28 Hemet/San Jacinto 60 56 0.3 40 10 21 54 29 Banning 75 65 0.3 42 10 19 84 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 76 69 0.2 49 11 12 97 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 57 55 0.2 33 7 10 51 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 62 58 0.3 44 13 18 61 33 SW San Bernardino Vly 58 54 0.3 44 12 20 56 34 C San Bernardino Vly 77 71 0.3 28 11 24 101 35 E San Bernardino Vly 76 69 0.3 37 11 23 97 36 W San Bernardino Mtns 69 64 0.3 38 9 22 80 37 C San Bernardino Mtns 76 71 0.3 35 6 24 101 38 Big Bear Lake 72 67 0.3 38 5 22 90 San Bernardino County: Mojave Desert Air Basin 39 Phelan 76 70 0.3 33 5 22 100 40 Hesperia 75 71 0.3 33 7 24 101 41 Trona 64 59 0.2 26 7 9 64 42 Victorville 73 69 0.2 33 9 24 97 43 Yucca Vly 74 68 0.2 36 7 15 93 44 Barstow 79 69 0.2 32 7 23 97 45 Twentynine Palms 69 65 0.2 34 8 14 84 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., JUN. 25, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 50 PM2.5 Inland Orange County AQI: 50 PM2.5 Temecula/Anza Area AQI: 48 Ozone MODERATE in the following area(s): Antelope Valley AQI: 84 Ozone Banning Pass Area AQI: 84 Ozone Big Bear Lake AQI: 90 Ozone Central Mojave Desert AQI: 93 Ozone Coachella Valley/Low Desert AQI: 97 Ozone Hemet/Elsinore Area AQI: 74 Ozone Metropolitan Area AQI: 58 PM2.5 Northern Mojave Desert AQI: 97 Ozone Riverside Valley AQI: 77 Ozone San Fernando/Santa Clarita Valleys AQI: 84 Ozone San Gabriel Mountains AQI: 67 Ozone San Gabriel Valley AQI: 74 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): San Bernardino Mountains AQI: 101 Ozone San Bernardino Valley AQI: 101 Ozone Victor Valley AQI: 101 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ High temperatures will be similar to Wednesday. Onshore flow will increase and the marine layer will become more shallow overnight leading into Thursday morning. High wind gusts are possible in the Northern Coachella Valley. Inversion Base: 2262 FT | Breaking Temperature: 83 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2543 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 34, 37 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 THURSDAY, JUNE 25, 2026 IN THE SOUTH COAST AIR BASIN.