SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., JUN. 26, 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 43 0.4 26 11 20 55 2 NW Coastal LA 38 35 0.2 26 9 12 50 3 SW Coastal LA 34 33 0.2 26 8 14 44 4 S Coastal LA 39 36 0.2 26 7 16 39 5 Southeast LA Co 44 40 0.3 27 9 16 50 6 W San Fernando Vly 57 50 0.2 25 10 8 53 7 E San Fernando Vly 54 49 0.3 27 11 15 55 8 W San Gabriel Vly 53 47 0.2 29 11 11 55 9 E San Gabriel Vly 59 54 0.3 31 13 17 58 10 Pomona Walnut Vly 57 51 0.3 40 12 16 56 11 S San Gabriel Vly 48 43 0.3 29 10 14 53 12 S Central LA Co 39 37 0.2 26 9 11 50 13 Santa Clarita Vly 69 60 0.2 27 11 13 67 15 San Gabriel Mts 61 55 0.2 38 12 16 56 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 67 62 0.2 31 11 10 74 Orange County: South Coast Air Basin 16 N Orange Co 47 42 0.1 34 9 9 50 17 Central Orange Co 43 38 0.2 26 9 8 50 18 N Coastal Orange Co 41 36 0.2 25 6 13 33 19 Saddleback Vly 44 40 0.1 33 6 10 37 20 Central Coastal 42 37 0.2 23 6 10 34 21 Capistrano Vly 41 37 0.2 28 6 8 34 Riverside County: South Coast Air Basin 22 Norco/Corona 57 51 0.3 42 9 10 50 23 Metro Riverside Co 63 56 0.3 45 11 10 55 24 Perris Vly 62 55 0.3 32 9 19 51 25 Lake Elsinore 46 43 0.2 19 8 8 44 26 Temecula Vly 44 39 0.2 39 7 9 39 27 Anza Vly 54 49 0.2 45 6 11 45 28 Hemet/San Jacinto 58 56 0.2 35 8 20 54 29 Banning 65 62 0.2 33 7 20 74 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 69 66 0.2 59 10 14 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 55 53 0.2 34 8 10 49 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 62 56 0.3 44 13 15 58 33 SW San Bernardino Vly 59 52 0.3 44 11 18 55 34 C San Bernardino Vly 70 62 0.3 31 12 22 74 35 E San Bernardino Vly 77 71 0.3 34 10 20 101 36 W San Bernardino Mtns 65 59 0.2 39 11 19 64 37 C San Bernardino Mtns 82 71 0.2 33 9 21 101 38 Big Bear Lake 68 66 0.2 35 6 20 87 San Bernardino County: Mojave Desert Air Basin 39 Phelan 65 62 0.2 32 6 19 74 40 Hesperia 62 58 0.2 29 9 21 61 41 Trona 65 56 0.1 43 7 18 54 42 Victorville 64 61 0.2 33 9 20 71 43 Yucca Vly 64 61 0.2 34 6 14 71 44 Barstow 73 67 0.2 39 7 17 90 45 Twentynine Palms 60 59 0.2 33 6 13 64 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., JUN. 26, 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: 45 Ozone MODERATE in the following area(s): Antelope Valley AQI: 74 Ozone Banning Pass Area AQI: 74 Ozone Big Bear Lake AQI: 87 Ozone Central Mojave Desert AQI: 71 Ozone Coachella Valley/Low Desert AQI: 87 Ozone Hemet/Elsinore Area AQI: 54 Ozone Metropolitan Area AQI: 55 PM2.5 Northern Mojave Desert AQI: 90 Ozone Riverside Valley AQI: 55 PM2.5 San Fernando/Santa Clarita Valleys AQI: 67 Ozone San Gabriel Mountains AQI: 56 PM2.5 San Gabriel Valley AQI: 58 PM2.5 Victor 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 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures on Friday will be lower than average. Onshore wind flow will increase and the marine layer will deepen and last until nearly noon. High wind gusts in the Coachella Valley are possible. Inversion Base: 2230 FT | Breaking Temperature: 79 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2626 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 35, 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 FRIDAY, JUNE 26, 2026 IN THE SOUTH COAST AIR BASIN.