SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., APR. 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 60 57 0.4 32 9 24 58 2 NW Coastal LA 57 52 0.3 30 7 17 48 3 SW Coastal LA 53 47 0.2 30 7 22 44 4 S Coastal LA 58 55 0.3 30 7 21 51 5 Southeast LA Co 57 55 0.5 31 9 27 51 6 W San Fernando Vly 63 58 0.3 28 8 17 61 7 E San Fernando Vly 66 63 0.3 31 9 19 77 8 W San Gabriel Vly 63 61 0.3 30 10 14 71 9 E San Gabriel Vly 65 60 0.3 27 8 15 67 10 Pomona Walnut Vly 59 55 0.4 32 9 19 51 11 S San Gabriel Vly 59 58 0.4 31 9 22 61 12 S Central LA Co 56 53 0.5 31 8 27 49 13 Santa Clarita Vly 67 61 0.2 27 8 15 71 15 San Gabriel Mts 65 61 0.3 30 9 20 71 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 69 63 0.2 23 10 23 77 Orange County: South Coast Air Basin 16 N Orange Co 57 56 0.2 31 9 14 54 17 Central Orange Co 50 48 0.3 29 9 24 50 18 N Coastal Orange Co 56 52 0.3 28 6 21 48 19 Saddleback Vly 55 53 0.2 31 5 20 49 20 Central Coastal 55 52 0.3 25 5 16 48 21 Capistrano Vly 55 52 0.2 29 5 13 48 Riverside County: South Coast Air Basin 22 Norco/Corona 61 58 0.3 36 8 20 61 23 Metro Riverside Co 70 64 0.4 39 10 20 80 24 Perris Vly 58 56 0.3 31 7 19 54 25 Lake Elsinore 59 55 0.2 20 6 10 51 26 Temecula Vly 50 48 0.2 38 7 9 44 27 Anza Vly 59 56 0.2 44 6 8 54 28 Hemet/San Jacinto 58 55 0.3 35 7 18 51 29 Banning 62 59 0.2 32 6 13 64 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 77 69 0.2 56 10 7 97 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 64 62 0.2 35 6 8 74 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 70 64 0.4 32 10 23 80 33 SW San Bernardino Vly 62 58 0.4 36 11 21 61 34 C San Bernardino Vly 71 64 0.3 29 9 22 80 35 E San Bernardino Vly 71 64 0.3 34 8 20 80 36 W San Bernardino Mtns 69 63 0.3 31 9 23 77 37 C San Bernardino Mtns 71 67 0.3 30 6 24 90 38 Big Bear Lake 65 62 0.3 31 6 21 74 San Bernardino County: Mojave Desert Air Basin 39 Phelan 62 60 0.3 29 6 25 67 40 Hesperia 64 61 0.3 29 8 27 71 41 Trona 58 55 0.2 20 5 12 51 42 Victorville 68 66 0.3 29 10 27 87 43 Yucca Vly 67 66 0.2 33 5 16 87 44 Barstow 70 66 0.2 25 7 37 87 45 Twentynine Palms 64 63 0.2 33 5 15 77 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., APR. 24, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Inland Orange County AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 77 Ozone Banning Pass Area AQI: 64 Ozone Big Bear Lake AQI: 74 Ozone Central Mojave Desert AQI: 87 Ozone Coachella Valley/Low Desert AQI: 97 Ozone Coastal Area AQI: 51 Ozone Hemet/Elsinore Area AQI: 54 Ozone Metropolitan Area AQI: 58 Ozone Northern Mojave Desert AQI: 87 Ozone Riverside Valley AQI: 80 Ozone San Bernardino Mountains AQI: 90 Ozone San Bernardino Valley AQI: 80 Ozone San Fernando/Santa Clarita Valleys AQI: 77 Ozone San Gabriel Mountains AQI: 71 Ozone San Gabriel Valley AQI: 71 Ozone Temecula/Anza Area AQI: 54 Ozone Victor Valley AQI: 87 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Partly cloudy skies are expected. Inversion Base: 2256 FT | Breaking Temperature: 67 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 3620 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 24, 2026 IN THE SOUTH COAST AIR BASIN.