SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., APR. 03, 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 50 46 0.5 24 8 42 44 2 NW Coastal LA 50 44 0.5 22 9 25 50 3 SW Coastal LA 45 41 0.6 25 9 39 50 4 S Coastal LA 54 48 1.0 33 7 49 46 5 Southeast LA Co 55 48 1.2 34 9 41 50 6 W San Fernando Vly 50 47 0.5 20 5 23 44 7 E San Fernando Vly 52 48 0.5 23 6 34 44 8 W San Gabriel Vly 55 49 0.4 24 5 30 45 9 E San Gabriel Vly 61 54 0.4 15 3 27 50 10 Pomona Walnut Vly 57 49 0.5 38 8 34 45 11 S San Gabriel Vly 55 49 0.7 32 9 32 50 12 S Central LA Co 55 47 1.2 28 8 33 44 13 Santa Clarita Vly 54 51 0.3 20 7 20 47 15 San Gabriel Mts 52 49 0.4 23 4 29 45 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 56 51 0.3 18 8 31 47 Orange County: South Coast Air Basin 16 N Orange Co 59 52 0.5 43 9 23 50 17 Central Orange Co 49 44 0.6 37 9 29 50 18 N Coastal Orange Co 52 47 0.9 32 7 42 44 19 Saddleback Vly 54 50 0.3 43 5 31 46 20 Central Coastal 54 48 0.4 28 7 29 44 21 Capistrano Vly 53 49 0.4 29 8 24 45 Riverside County: South Coast Air Basin 22 Norco/Corona 54 49 0.4 57 6 27 52 23 Metro Riverside Co 54 50 0.4 65 7 31 56 24 Perris Vly 48 45 0.4 49 5 28 45 25 Lake Elsinore 54 48 0.4 17 4 22 44 26 Temecula Vly 47 44 0.3 44 7 19 41 27 Anza Vly 47 46 0.3 55 6 16 51 28 Hemet/San Jacinto 48 47 0.4 47 5 30 44 29 Banning 50 49 0.3 43 3 33 45 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 52 50 0.2 74 8 10 60 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 46 45 0.2 35 6 12 42 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 56 50 0.4 27 7 29 46 33 SW San Bernardino Vly 55 49 0.5 57 8 31 52 34 C San Bernardino Vly 55 51 0.4 61 5 34 54 35 E San Bernardino Vly 54 51 0.4 55 5 29 51 36 W San Bernardino Mtns 53 49 0.4 30 5 30 45 37 C San Bernardino Mtns 52 50 0.4 54 5 29 50 38 Big Bear Lake 50 49 0.4 49 7 29 45 San Bernardino County: Mojave Desert Air Basin 39 Phelan 51 49 0.3 18 5 28 45 40 Hesperia 50 48 0.4 16 6 31 44 41 Trona 53 47 0.2 11 3 14 44 42 Victorville 54 51 0.3 20 7 28 47 43 Yucca Vly 52 49 0.3 32 6 21 45 44 Barstow 54 50 0.3 26 5 45 46 45 Twentynine Palms 50 47 0.2 31 7 19 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., APR. 03, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 47 Ozone Banning Pass Area AQI: 45 Ozone Big Bear Lake AQI: 45 Ozone Central Mojave Desert AQI: 45 Ozone Coastal Area AQI: 50 PM2.5 Hemet/Elsinore Area AQI: 45 PM10 Inland Orange County AQI: 50 PM2.5 Metropolitan Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 46 Ozone San Bernardino Mountains AQI: 50 PM10 San Fernando/Santa Clarita Valleys AQI: 47 Ozone San Gabriel Mountains AQI: 45 Ozone San Gabriel Valley AQI: 50 PM2.5 Victor Valley AQI: 47 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 60 PM10 Riverside Valley AQI: 56 PM10 San Bernardino Valley AQI: 54 PM10 Temecula/Anza Area AQI: 51 PM10 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Friday will be warmer than Thursday with partly cloudy skies expected. Strong offshore winds will affect most of the region. Inversion Base: 3019 FT | Breaking Temperature: 71 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 4946 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 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 FRIDAY, APRIL 03, 2026 IN THE SOUTH COAST AIR BASIN.