SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., MAR. 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 69 61 0.6 36 17 30 71 2 NW Coastal LA 68 57 0.4 32 19 13 69 3 SW Coastal LA 60 51 0.2 34 11 14 55 4 S Coastal LA 59 54 0.3 32 9 24 50 5 Southeast LA Co 68 59 0.5 34 13 23 64 6 W San Fernando Vly 80 71 0.4 30 13 18 101 7 E San Fernando Vly 75 65 0.5 35 15 22 84 8 W San Gabriel Vly 77 67 0.3 35 15 15 90 9 E San Gabriel Vly 91 75 0.4 36 19 18 115 10 Pomona Walnut Vly 89 72 0.4 36 20 17 105 11 S San Gabriel Vly 74 62 0.3 35 16 18 74 12 S Central LA Co 62 55 0.3 34 12 14 56 13 Santa Clarita Vly 92 76 0.3 32 10 23 118 15 San Gabriel Mts 83 70 0.4 36 11 24 100 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 74 62 0.3 30 13 25 74 Orange County: South Coast Air Basin 16 N Orange Co 76 64 0.1 37 15 11 80 17 Central Orange Co 69 61 0.4 28 12 8 71 18 N Coastal Orange Co 63 57 0.3 29 8 20 58 19 Saddleback Vly 79 70 0.2 37 8 16 100 20 Central Coastal 71 64 0.3 27 8 16 80 21 Capistrano Vly 69 65 0.3 28 8 17 84 Riverside County: South Coast Air Basin 22 Norco/Corona 88 78 0.4 47 16 19 126 23 Metro Riverside Co 91 81 0.5 51 18 20 136 24 Perris Vly 84 76 0.4 40 13 28 118 25 Lake Elsinore 76 68 0.4 28 12 18 93 26 Temecula Vly 59 57 0.3 33 9 15 58 27 Anza Vly 69 64 0.3 38 8 13 80 28 Hemet/San Jacinto 73 69 0.4 34 10 31 97 29 Banning 83 74 0.3 30 8 31 112 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 68 64 0.3 45 19 10 80 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 52 50 0.2 30 10 10 53 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 102 86 0.5 27 17 25 151 33 SW San Bernardino Vly 90 76 0.5 45 20 30 118 34 C San Bernardino Vly 91 81 0.5 39 14 35 136 35 E San Bernardino Vly 94 84 0.5 44 12 31 147 36 W San Bernardino Mtns 98 85 0.4 34 14 31 150 37 C San Bernardino Mtns 105 86 0.4 38 8 34 151 38 Big Bear Lake 84 77 0.4 35 9 31 122 San Bernardino County: Mojave Desert Air Basin 39 Phelan 76 69 0.3 35 8 33 97 40 Hesperia 80 73 0.4 37 12 36 108 41 Trona 63 60 0.2 33 8 7 67 42 Victorville 77 71 0.3 36 13 35 101 43 Yucca Vly 79 73 0.3 28 14 22 108 44 Barstow 73 66 0.3 25 8 50 87 45 Twentynine Palms 61 59 0.3 28 11 19 64 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., MAR. 24, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 74 Ozone Coachella Valley/Low Desert AQI: 80 Ozone Coastal Area AQI: 80 Ozone Inland Orange County AQI: 100 Ozone Metropolitan Area AQI: 80 Ozone Northern Mojave Desert AQI: 87 Ozone San Gabriel Mountains AQI: 100 Ozone Temecula/Anza Area AQI: 80 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 112 Ozone Big Bear Lake AQI: 122 Ozone Central Mojave Desert AQI: 108 Ozone Hemet/Elsinore Area AQI: 118 Ozone Riverside Valley AQI: 136 Ozone San Fernando/Santa Clarita Valleys AQI: 118 Ozone San Gabriel Valley AQI: 115 Ozone Victor Valley AQI: 108 Ozone UNHEALTHY in the following area(s): San Bernardino Mountains AQI: 151 Ozone San Bernardino Valley AQI: 151 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ High temperatures will continue to be 10-20 degrees above average on Tuesday. Night and morning low clouds and fog are expected for coastal areas and western valleys. Inversion Base: 486 FT | Breaking Temperature: 74 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2571 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, MARCH 24, 2026 IN THE SOUTH COAST AIR BASIN.