SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., JUN. 24, 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 60 51 0.5 37 36 18 102 2 NW Coastal LA 48 41 0.4 31 9 19 50 3 SW Coastal LA 40 35 0.2 32 9 8 50 4 S Coastal LA 47 39 0.2 31 8 25 44 5 Southeast LA Co 51 45 0.4 33 11 22 55 6 W San Fernando Vly 63 57 0.3 30 9 11 58 7 E San Fernando Vly 64 57 0.4 33 11 21 58 8 W San Gabriel Vly 67 59 0.3 35 12 20 64 9 E San Gabriel Vly 80 73 0.4 38 14 22 108 10 Pomona Walnut Vly 82 72 0.4 42 13 20 105 11 S San Gabriel Vly 60 56 0.3 35 13 20 58 12 S Central LA Co 48 41 0.2 32 10 18 53 13 Santa Clarita Vly 81 73 0.3 29 11 23 108 15 San Gabriel Mts 71 65 0.3 40 9 22 84 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 74 69 0.3 26 11 18 97 Orange County: South Coast Air Basin 16 N Orange Co 52 46 0.2 39 9 12 50 17 Central Orange Co 48 43 0.3 28 9 8 50 18 N Coastal Orange Co 44 38 0.2 29 6 21 35 19 Saddleback Vly 51 44 0.2 39 6 16 41 20 Central Coastal 47 41 0.2 27 6 16 38 21 Capistrano Vly 48 43 0.3 31 7 17 40 Riverside County: South Coast Air Basin 22 Norco/Corona 71 61 0.3 50 11 17 71 23 Metro Riverside Co 80 71 0.4 54 13 16 101 24 Perris Vly 74 67 0.3 38 10 26 90 25 Lake Elsinore 63 59 0.3 26 7 17 64 26 Temecula Vly 50 48 0.3 39 9 15 50 27 Anza Vly 55 53 0.2 45 6 12 49 28 Hemet/San Jacinto 63 60 0.3 36 7 27 67 29 Banning 76 70 0.3 29 8 22 100 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 72 69 0.2 54 9 9 97 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 52 48 0.2 34 6 9 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 81 71 0.4 43 16 22 101 33 SW San Bernardino Vly 75 66 0.4 50 13 24 87 34 C San Bernardino Vly 88 78 0.3 21 12 34 126 35 E San Bernardino Vly 93 81 0.4 38 10 30 136 36 W San Bernardino Mtns 81 73 0.3 40 12 26 108 37 C San Bernardino Mtns 84 77 0.3 32 6 32 122 38 Big Bear Lake 80 70 0.3 30 6 29 100 San Bernardino County: Mojave Desert Air Basin 39 Phelan 70 67 0.3 33 6 24 90 40 Hesperia 72 67 0.3 31 8 29 90 41 Trona 64 57 0.2 28 6 7 58 42 Victorville 71 67 0.3 32 10 24 90 43 Yucca Vly 73 64 0.2 31 7 17 80 44 Barstow 70 66 0.3 29 9 37 87 45 Twentynine Palms 61 57 0.2 31 6 16 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., JUN. 24, 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: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 97 Ozone Banning Pass Area AQI: 100 Ozone Big Bear Lake AQI: 100 Ozone Central Mojave Desert AQI: 80 Ozone Coachella Valley/Low Desert AQI: 97 Ozone Hemet/Elsinore Area AQI: 90 Ozone Northern Mojave Desert AQI: 87 Ozone San Gabriel Mountains AQI: 84 Ozone Victor Valley AQI: 90 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Metropolitan Area AQI: 102 PM2.5 Riverside Valley AQI: 101 Ozone San Bernardino Mountains AQI: 122 Ozone San Bernardino Valley AQI: 136 Ozone San Fernando/Santa Clarita Valleys AQI: 108 Ozone San Gabriel Valley AQI: 108 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ There is a Heat Advisory in effect for most of the Los Angeles Basin so temperatures will be higher than average. The marine layer overnight is expected to remain the same as last night. Inversion Base: 1586 FT | Breaking Temperature: 85 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2036 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 1, 9, 10, 13, 23, 32, 34, 35, 36, 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 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 WEDNESDAY, JUNE 24, 2026 IN THE SOUTH COAST AIR BASIN.