SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., MAR. 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 81 66 0.5 35 21 39 87 2 NW Coastal LA 66 55 0.5 32 21 18 73 3 SW Coastal LA 59 49 0.3 34 16 14 64 4 S Coastal LA 65 57 0.3 36 12 27 58 5 Southeast LA Co 68 61 0.5 36 17 31 71 6 W San Fernando Vly 74 67 0.5 29 13 21 90 7 E San Fernando Vly 81 68 0.5 34 18 29 93 8 W San Gabriel Vly 92 75 0.4 35 18 20 115 9 E San Gabriel Vly 98 78 0.5 34 16 23 126 10 Pomona Walnut Vly 86 69 0.6 38 21 41 97 11 S San Gabriel Vly 77 66 0.5 36 22 24 87 12 S Central LA Co 65 58 0.5 35 16 22 64 13 Santa Clarita Vly 93 78 0.3 27 10 21 126 15 San Gabriel Mts 85 72 0.5 34 12 22 105 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 61 53 0.4 19 14 20 60 Orange County: South Coast Air Basin 16 N Orange Co 70 61 0.4 39 17 15 71 17 Central Orange Co 56 50 0.4 37 14 19 60 18 N Coastal Orange Co 57 51 0.3 35 10 25 53 19 Saddleback Vly 65 58 0.3 39 8 25 61 20 Central Coastal 60 56 0.3 32 10 21 54 21 Capistrano Vly 65 60 0.4 29 9 21 67 Riverside County: South Coast Air Basin 22 Norco/Corona 82 69 0.5 44 16 29 97 23 Metro Riverside Co 93 77 0.5 47 18 27 122 24 Perris Vly 87 75 0.4 38 12 28 115 25 Lake Elsinore 78 64 0.4 29 12 21 80 26 Temecula Vly 58 55 0.3 29 5 20 51 27 Anza Vly 62 57 0.3 32 6 18 58 28 Hemet/San Jacinto 77 68 0.4 35 6 29 93 29 Banning 90 73 0.4 34 5 28 108 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 65 59 0.2 55 18 16 68 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 55 53 0.3 34 9 16 50 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 93 76 0.5 27 15 19 118 33 SW San Bernardino Vly 84 69 0.6 44 20 34 97 34 C San Bernardino Vly 103 88 0.6 40 13 40 156 35 E San Bernardino Vly 99 89 0.4 39 9 29 159 36 W San Bernardino Mtns 101 85 0.5 39 10 30 150 37 C San Bernardino Mtns 114 90 0.5 45 6 32 161 38 Big Bear Lake 78 70 0.4 38 8 29 100 San Bernardino County: Mojave Desert Air Basin 39 Phelan 87 78 0.4 42 5 29 126 40 Hesperia 67 62 0.4 49 8 31 74 41 Trona 56 53 0.3 30 8 90 89 42 Victorville 78 71 0.4 46 9 30 101 43 Yucca Vly 65 60 0.3 40 8 23 67 44 Barstow 67 62 0.4 29 7 38 74 45 Twentynine Palms 59 56 0.3 39 9 21 54 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., MAR. 26, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 60 PM2.5 Big Bear Lake AQI: 100 Ozone Central Mojave Desert AQI: 67 Ozone Coachella Valley/Low Desert AQI: 68 PM2.5 Coastal Area AQI: 73 PM2.5 Inland Orange County AQI: 67 Ozone Metropolitan Area AQI: 87 Ozone Northern Mojave Desert AQI: 89 NO2 Temecula/Anza Area AQI: 58 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 108 Ozone Hemet/Elsinore Area AQI: 115 Ozone Riverside Valley AQI: 122 Ozone San Fernando/Santa Clarita Valleys AQI: 126 Ozone San Gabriel Mountains AQI: 105 Ozone San Gabriel Valley AQI: 126 Ozone Victor Valley AQI: 126 Ozone UNHEALTHY in the following area(s): San Bernardino Mountains AQI: 161 Ozone San Bernardino Valley AQI: 159 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Inland areas are expected to continue to have high temperatures on Thursday 15-20 degrees above average for this time of year. Temperatures are not expected to be as hot in coastal areas due to the marine layer. Inversion Base: 486 FT | Breaking Temperature: 72 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2371 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 THURSDAY, MARCH 26, 2026 IN THE SOUTH COAST AIR BASIN.