SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., APR. 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 54 49 0.4 19 8 23 45 2 NW Coastal LA 50 46 0.4 18 5 22 43 3 SW Coastal LA 45 42 0.2 19 5 20 39 4 S Coastal LA 52 48 0.3 22 7 30 44 5 Southeast LA Co 54 49 0.5 24 8 28 45 6 W San Fernando Vly 55 51 0.4 15 6 15 47 7 E San Fernando Vly 58 54 0.4 19 7 20 50 8 W San Gabriel Vly 60 54 0.3 22 9 15 50 9 E San Gabriel Vly 64 57 0.3 26 7 19 58 10 Pomona Walnut Vly 59 52 0.4 29 8 20 48 11 S San Gabriel Vly 57 51 0.5 25 8 25 47 12 S Central LA Co 51 47 0.5 20 8 26 44 13 Santa Clarita Vly 65 59 0.3 15 6 15 64 15 San Gabriel Mts 61 57 0.3 28 8 22 58 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 69 62 0.3 15 8 25 74 Orange County: South Coast Air Basin 16 N Orange Co 58 53 0.3 28 8 22 49 17 Central Orange Co 45 43 0.4 24 8 22 44 18 N Coastal Orange Co 49 47 0.3 22 4 27 44 19 Saddleback Vly 56 52 0.2 28 3 21 48 20 Central Coastal 51 48 0.3 21 3 19 44 21 Capistrano Vly 51 49 0.2 19 3 16 45 Riverside County: South Coast Air Basin 22 Norco/Corona 63 58 0.3 34 9 19 61 23 Metro Riverside Co 66 60 0.3 37 10 21 67 24 Perris Vly 64 59 0.3 26 8 22 64 25 Lake Elsinore 60 57 0.2 19 7 15 58 26 Temecula Vly 53 50 0.2 22 5 13 46 27 Anza Vly 56 55 0.2 25 4 11 51 28 Hemet/San Jacinto 60 57 0.3 25 6 21 58 29 Banning 66 61 0.3 25 7 18 71 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 62 0.2 38 7 9 74 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 59 57 0.2 24 5 8 58 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 64 58 0.4 28 9 22 61 33 SW San Bernardino Vly 61 55 0.4 34 10 26 53 34 C San Bernardino Vly 65 60 0.4 25 8 30 67 35 E San Bernardino Vly 67 61 0.4 27 8 23 71 36 W San Bernardino Mtns 67 60 0.4 28 9 25 67 37 C San Bernardino Mtns 67 62 0.4 29 6 25 74 38 Big Bear Lake 62 59 0.3 29 8 23 64 San Bernardino County: Mojave Desert Air Basin 39 Phelan 64 61 0.3 28 7 24 71 40 Hesperia 63 61 0.3 31 7 26 71 41 Trona 55 52 0.2 19 6 5 48 42 Victorville 65 64 0.3 30 8 24 80 43 Yucca Vly 67 63 0.2 31 6 18 77 44 Barstow 67 63 0.3 27 7 39 77 45 Twentynine Palms 62 60 0.2 29 6 16 67 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., APR. 28, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 44 Ozone Inland Orange County AQI: 48 Ozone Metropolitan Area AQI: 49 Ozone MODERATE in the following area(s): Antelope Valley AQI: 74 Ozone Banning Pass Area AQI: 71 Ozone Big Bear Lake AQI: 64 Ozone Central Mojave Desert AQI: 77 Ozone Coachella Valley/Low Desert AQI: 74 Ozone Hemet/Elsinore Area AQI: 64 Ozone Northern Mojave Desert AQI: 77 Ozone Riverside Valley AQI: 67 Ozone San Bernardino Mountains AQI: 74 Ozone San Bernardino Valley AQI: 71 Ozone San Fernando/Santa Clarita Valleys AQI: 64 Ozone San Gabriel Mountains AQI: 58 Ozone San Gabriel Valley AQI: 58 Ozone Temecula/Anza Area AQI: 51 Ozone Victor Valley AQI: 80 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Less eventful weather on Tuesday as SoCal lies between two weak low pressure systems. Expect mostly sunny skies as temperatures warm 3-12 degrees over Monday, bringing them closer to seasonal norms. Onshore winds will be moderate, gusting up to 20 mph in the afternoons. Inversion Base: 3833 FT | Breaking Temperature: 69 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 4616 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: 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, APRIL 28, 2026 IN THE SOUTH COAST AIR BASIN.