SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., MAR. 28, 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 71 63 0.8 32 14 28 77 2 NW Coastal LA 66 59 0.8 31 15 14 64 3 SW Coastal LA 58 52 0.3 32 16 18 64 4 S Coastal LA 70 62 0.6 37 17 28 74 5 Southeast LA Co 76 66 0.6 38 14 26 87 6 W San Fernando Vly 72 63 0.4 29 8 21 77 7 E San Fernando Vly 72 66 0.7 32 10 24 87 8 W San Gabriel Vly 81 72 0.4 35 10 21 105 9 E San Gabriel Vly 92 80 0.5 40 9 30 133 10 Pomona Walnut Vly 79 68 0.6 43 12 42 93 11 S San Gabriel Vly 77 67 0.5 39 13 26 90 12 S Central LA Co 67 60 0.6 34 14 25 67 13 Santa Clarita Vly 79 64 0.3 29 9 22 80 15 San Gabriel Mts 76 67 0.5 40 8 26 90 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 63 57 0.4 26 10 22 58 Orange County: South Coast Air Basin 16 N Orange Co 91 78 0.3 46 14 18 126 17 Central Orange Co 88 76 0.4 39 13 24 118 18 N Coastal Orange Co 75 65 0.5 37 13 26 84 19 Saddleback Vly 82 74 0.3 46 7 25 112 20 Central Coastal 75 66 0.3 36 12 21 87 21 Capistrano Vly 72 63 0.4 35 11 18 77 Riverside County: South Coast Air Basin 22 Norco/Corona 91 81 0.5 56 12 29 136 23 Metro Riverside Co 98 88 0.4 61 14 35 156 24 Perris Vly 69 71 0.5 46 8 31 101 25 Lake Elsinore 74 68 0.4 34 8 16 93 26 Temecula Vly 58 55 0.4 39 4 16 51 27 Anza Vly 58 55 0.3 43 4 16 51 28 Hemet/San Jacinto 69 62 0.4 39 4 26 74 29 Banning 74 63 0.4 35 4 20 77 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 66 61 0.2 51 9 15 71 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 53 49 0.2 32 6 16 45 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 82 73 0.5 27 10 25 108 33 SW San Bernardino Vly 88 78 0.5 55 13 36 126 34 C San Bernardino Vly 96 88 0.5 43 11 35 156 35 E San Bernardino Vly 92 83 0.5 48 7 33 143 36 W San Bernardino Mtns 81 72 0.5 31 7 29 105 37 C San Bernardino Mtns 81 75 0.5 40 6 31 115 38 Big Bear Lake 69 64 0.5 38 4 29 80 San Bernardino County: Mojave Desert Air Basin 39 Phelan 65 58 0.5 28 4 27 61 40 Hesperia 71 62 0.5 24 7 31 74 41 Trona 65 58 0.3 32 8 25 61 42 Victorville 77 66 0.5 27 9 27 87 43 Yucca Vly 64 60 0.3 28 4 25 67 44 Barstow 73 66 0.4 31 9 47 87 45 Twentynine Palms 58 54 0.3 29 4 23 50 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., MAR. 28, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 58 Ozone Banning Pass Area AQI: 77 Ozone Big Bear Lake AQI: 80 Ozone Central Mojave Desert AQI: 67 Ozone Coachella Valley/Low Desert AQI: 71 Ozone Coastal Area AQI: 87 Ozone Northern Mojave Desert AQI: 87 Ozone San Fernando/Santa Clarita Valleys AQI: 87 Ozone San Gabriel Mountains AQI: 90 Ozone Temecula/Anza Area AQI: 51 Ozone Victor Valley AQI: 87 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Hemet/Elsinore Area AQI: 101 Ozone Inland Orange County AQI: 118 Ozone Metropolitan Area AQI: 126 Ozone San Bernardino Mountains AQI: 115 Ozone San Gabriel Valley AQI: 133 Ozone UNHEALTHY in the following area(s): Riverside Valley AQI: 156 Ozone San Bernardino Valley AQI: 156 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures are expected to be slightly warmer on Saturday compared to Friday. Fog and low clouds are expected on Saturday for coastal areas, but may be patchier than in recent days. Inversion Base: 486 FT | Breaking Temperature: 77 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1490 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 Above 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 SATURDAY, MARCH 28, 2026 IN THE SOUTH COAST AIR BASIN.