SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., JUN. 23, 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 61 51 0.5 57 56 22 151 2 NW Coastal LA 43 39 0.2 26 12 11 56 3 SW Coastal LA 39 34 0.1 27 10 7 53 4 S Coastal LA 47 40 0.3 28 8 20 44 5 Southeast LA Co 56 47 0.4 37 36 22 102 6 W San Fernando Vly 64 59 0.3 26 10 16 64 7 E San Fernando Vly 63 55 0.4 27 12 18 56 8 W San Gabriel Vly 69 61 0.4 37 36 15 102 9 E San Gabriel Vly 79 69 0.4 37 36 22 102 10 Pomona Walnut Vly 82 69 0.4 41 14 27 97 11 S San Gabriel Vly 64 53 0.3 37 36 22 102 12 S Central LA Co 52 43 0.3 27 10 15 53 13 Santa Clarita Vly 81 75 0.3 26 10 18 115 15 San Gabriel Mts 71 66 0.4 39 10 23 87 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 76 70 0.3 26 11 24 100 Orange County: South Coast Air Basin 16 N Orange Co 61 52 0.1 37 10 14 53 17 Central Orange Co 51 44 0.3 28 10 13 53 18 N Coastal Orange Co 44 38 0.3 28 5 18 35 19 Saddleback Vly 57 49 0.2 37 5 17 45 20 Central Coastal 48 42 0.3 28 5 16 39 21 Capistrano Vly 48 43 0.3 31 5 18 40 Riverside County: South Coast Air Basin 22 Norco/Corona 80 69 0.4 48 12 19 97 23 Metro Riverside Co 87 76 0.5 52 14 19 118 24 Perris Vly 76 70 0.4 36 12 24 100 25 Lake Elsinore 65 58 0.4 26 8 18 61 26 Temecula Vly 50 46 0.3 36 8 17 44 27 Anza Vly 58 55 0.3 40 9 16 51 28 Hemet/San Jacinto 67 63 0.3 32 10 26 77 29 Banning 77 71 0.3 30 9 27 101 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 63 0.2 47 26 15 82 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 52 48 0.2 34 12 12 56 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 82 73 0.5 43 14 23 108 33 SW San Bernardino Vly 79 67 0.4 48 14 29 90 34 C San Bernardino Vly 89 82 0.4 32 14 35 140 35 E San Bernardino Vly 92 84 0.5 37 12 27 147 36 W San Bernardino Mtns 80 75 0.4 39 11 31 115 37 C San Bernardino Mtns 96 86 0.4 34 8 34 151 38 Big Bear Lake 72 64 0.3 33 7 29 80 San Bernardino County: Mojave Desert Air Basin 39 Phelan 73 66 0.3 32 6 37 87 40 Hesperia 77 71 0.3 31 8 38 101 41 Trona 62 59 0.2 37 6 22 64 42 Victorville 72 67 0.3 33 10 40 90 43 Yucca Vly 69 65 0.2 32 13 22 84 44 Barstow 68 63 0.3 37 12 40 77 45 Twentynine Palms 58 55 0.2 33 14 19 60 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., JUN. 23, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 100 Ozone Big Bear Lake AQI: 80 Ozone Central Mojave Desert AQI: 84 Ozone Coachella Valley/Low Desert AQI: 82 PM2.5 Coastal Area AQI: 56 PM2.5 Hemet/Elsinore Area AQI: 100 Ozone Inland Orange County AQI: 53 PM2.5 Northern Mojave Desert AQI: 77 Ozone San Gabriel Mountains AQI: 87 Ozone Temecula/Anza Area AQI: 51 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 101 Ozone Riverside Valley AQI: 118 Ozone San Bernardino Valley AQI: 147 Ozone San Fernando/Santa Clarita Valleys AQI: 115 Ozone San Gabriel Valley AQI: 102 PM2.5 Victor Valley AQI: 101 Ozone UNHEALTHY in the following area(s): Metropolitan Area AQI: 151 PM2.5 San Bernardino Mountains AQI: 151 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures will increase throughout Southern California. There is a Heat Advisory from NWS in effect for most of Los Angeles County through 9 PM Thursday. The marine layer will become more shallow. Inversion Base: 1596 FT | Breaking Temperature: 82 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2120 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: NO-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 TUESDAY, JUNE 23, 2026 IN THE SOUTH COAST AIR BASIN.