SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., MAR. 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 70 64 0.4 34 15 36 80 2 NW Coastal LA 65 56 0.4 31 18 19 68 3 SW Coastal LA 54 47 0.3 32 11 15 55 4 S Coastal LA 58 53 0.3 31 8 19 49 5 Southeast LA Co 64 57 0.5 33 12 29 58 6 W San Fernando Vly 76 68 0.5 27 10 19 93 7 E San Fernando Vly 75 68 0.5 32 12 27 93 8 W San Gabriel Vly 87 75 0.4 33 11 19 115 9 E San Gabriel Vly 101 80 0.4 35 14 19 133 10 Pomona Walnut Vly 95 73 0.5 35 17 29 108 11 S San Gabriel Vly 72 63 0.5 34 15 24 77 12 S Central LA Co 58 53 0.5 32 11 20 55 13 Santa Clarita Vly 78 67 0.3 26 8 21 90 15 San Gabriel Mts 78 67 0.5 35 7 22 90 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 66 59 0.4 17 12 16 64 Orange County: South Coast Air Basin 16 N Orange Co 72 61 0.3 38 13 13 71 17 Central Orange Co 58 52 0.4 30 11 19 55 18 N Coastal Orange Co 56 52 0.3 29 5 19 48 19 Saddleback Vly 67 60 0.2 38 5 23 67 20 Central Coastal 60 55 0.3 29 5 18 51 21 Capistrano Vly 60 56 0.4 30 5 19 54 Riverside County: South Coast Air Basin 22 Norco/Corona 86 74 0.4 47 16 26 112 23 Metro Riverside Co 97 80 0.5 51 20 28 133 24 Perris Vly 83 72 0.5 40 11 27 105 25 Lake Elsinore 73 66 0.4 29 11 19 87 26 Temecula Vly 55 53 0.3 37 5 18 49 27 Anza Vly 64 60 0.3 42 5 16 67 28 Hemet/San Jacinto 70 63 0.4 35 8 25 77 29 Banning 77 66 0.4 32 7 22 87 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 61 0.3 51 7 15 71 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 51 49 0.3 32 5 15 45 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 103 82 0.6 24 14 22 140 33 SW San Bernardino Vly 82 72 0.5 45 18 31 105 34 C San Bernardino Vly 99 79 0.6 40 13 36 129 35 E San Bernardino Vly 95 78 0.5 42 10 27 126 36 W San Bernardino Mtns 81 69 0.5 33 12 30 97 37 C San Bernardino Mtns 99 78 0.5 39 8 32 126 38 Big Bear Lake 80 69 0.5 37 6 29 97 San Bernardino County: Mojave Desert Air Basin 39 Phelan 61 57 0.4 35 5 31 58 40 Hesperia 75 65 0.5 38 11 34 84 41 Trona 54 52 0.3 48 8 15 48 42 Victorville 63 62 0.4 40 11 34 74 43 Yucca Vly 69 66 0.3 35 7 24 87 44 Barstow 69 59 0.4 50 8 44 64 45 Twentynine Palms 58 57 0.3 34 6 22 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., MAR. 23, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 64 Ozone Banning Pass Area AQI: 87 Ozone Big Bear Lake AQI: 97 Ozone Central Mojave Desert AQI: 87 Ozone Coachella Valley/Low Desert AQI: 71 Ozone Coastal Area AQI: 68 PM2.5 Inland Orange County AQI: 67 Ozone Metropolitan Area AQI: 80 Ozone Northern Mojave Desert AQI: 64 Ozone San Fernando/Santa Clarita Valleys AQI: 93 Ozone San Gabriel Mountains AQI: 90 Ozone Temecula/Anza Area AQI: 67 Ozone Victor Valley AQI: 84 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Hemet/Elsinore Area AQI: 105 Ozone Riverside Valley AQI: 133 Ozone San Bernardino Mountains AQI: 126 Ozone San Bernardino Valley AQI: 140 Ozone San Gabriel Valley AQI: 133 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ High pressure rebuilds slightly on Monday but not as strongly as last week. This still allows for some onshore flow and some areas of low cloud can be expected close to the coast. Monday temperatures will be 1-3 degrees warmer than Sunday. Inversion Base: 486 FT | Breaking Temperature: 73 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2226 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 MONDAY, MARCH 23, 2026 IN THE SOUTH COAST AIR BASIN.