SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., MAR. 26, 2025 -------------------------------------------------------------------------------- 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 51 46 0.5 29 13 21 58 2 NW Coastal LA 48 44 0.3 27 7 16 41 3 SW Coastal LA 42 38 0.3 28 6 16 35 4 S Coastal LA 48 43 0.3 26 8 23 44 5 Southeast LA Co 47 42 0.4 27 12 18 56 6 W San Fernando Vly 59 54 0.4 26 10 10 53 7 E San Fernando Vly 55 49 0.4 29 14 17 60 8 W San Gabriel Vly 54 50 0.3 29 17 13 66 9 E San Gabriel Vly 55 52 0.4 26 15 16 62 10 Pomona Walnut Vly 53 48 0.3 28 14 20 60 11 S San Gabriel Vly 48 43 0.3 28 15 16 62 12 S Central LA Co 47 43 0.4 28 9 14 50 13 Santa Clarita Vly 62 56 0.2 27 14 19 60 15 San Gabriel Mts 57 53 0.3 29 15 22 62 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 58 54 0.3 58 13 24 58 Orange County: South Coast Air Basin 16 N Orange Co 48 44 0.1 23 12 9 56 17 Central Orange Co 40 37 0.3 18 12 13 56 18 N Coastal Orange Co 41 38 0.3 21 6 20 35 19 Saddleback Vly 52 47 0.2 23 7 14 44 20 Central Coastal 47 43 0.2 23 5 14 40 21 Capistrano Vly 48 43 0.3 43 5 12 40 Riverside County: South Coast Air Basin 22 Norco/Corona 57 51 0.4 28 14 14 60 23 Metro Riverside Co 65 55 0.7 31 15 14 62 24 Perris Vly 63 56 0.4 38 15 16 62 25 Lake Elsinore 56 53 0.3 20 9 11 50 26 Temecula Vly 55 49 0.2 72 7 11 59 27 Anza Vly 57 55 0.2 90 9 11 68 28 Hemet/San Jacinto 64 58 0.3 54 11 17 61 29 Banning 69 62 0.3 37 10 17 74 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 0.2 127 20 11 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 60 57 0.2 59 10 11 58 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 65 58 0.4 23 14 11 61 33 SW San Bernardino Vly 55 49 0.4 28 14 18 60 34 C San Bernardino Vly 63 56 0.5 35 12 23 56 35 E San Bernardino Vly 65 56 0.5 40 13 19 58 36 W San Bernardino Mtns 63 56 0.4 42 11 23 55 37 C San Bernardino Mtns 61 56 0.4 51 5 26 54 38 Big Bear Lake 63 59 0.3 49 10 23 64 San Bernardino County: Mojave Desert Air Basin 39 Phelan 62 59 0.3 60 5 31 64 40 Hesperia 59 55 0.3 62 8 32 54 41 Trona 57 53 0.2 25 5 9 49 42 Victorville 62 57 0.3 61 7 34 58 43 Yucca Vly 65 61 0.2 48 10 19 71 44 Barstow 65 61 0.3 60 9 39 71 45 Twentynine Palms 62 60 0.2 50 12 18 67 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., MAR. 26, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 44 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 58 PM2.5 Banning Pass Area AQI: 74 Ozone Big Bear Lake AQI: 64 Ozone Central Mojave Desert AQI: 71 Ozone Coachella Valley/Low Desert AQI: 87 PM10 Hemet/Elsinore Area AQI: 62 PM2.5 Inland Orange County AQI: 56 PM2.5 Metropolitan Area AQI: 58 PM2.5 Northern Mojave Desert AQI: 71 Ozone Riverside Valley AQI: 62 PM2.5 San Bernardino Mountains AQI: 55 PM2.5 San Bernardino Valley AQI: 61 Ozone San Fernando/Santa Clarita Valleys AQI: 60 PM2.5 San Gabriel Mountains AQI: 62 PM2.5 San Gabriel Valley AQI: 66 PM2.5 Temecula/Anza Area AQI: 68 PM10 Victor Valley AQI: 64 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Wednesday will be much cooler than Tuesday with onshore flow expected. Mostly sunny skies are expected with the exception of morning clouds in the western side of the South Coast Air Basin. Inversion Base: 1597 FT | Breaking Temperature: 69 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2605 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 WEDNESDAY, MARCH 26, 2025 IN THE SOUTH COAST AIR BASIN.