SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., APR. 30, 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 52 47 0.3 29 12 22 56 2 NW Coastal LA 47 44 0.3 26 9 12 50 3 SW Coastal LA 42 41 0.2 27 8 16 44 4 S Coastal LA 46 45 0.3 25 8 20 44 5 Southeast LA Co 50 47 0.5 27 10 21 53 6 W San Fernando Vly 58 53 0.4 25 9 12 50 7 E San Fernando Vly 54 50 0.4 28 11 19 55 8 W San Gabriel Vly 57 51 0.3 28 12 17 56 9 E San Gabriel Vly 68 58 0.4 28 11 19 61 10 Pomona Walnut Vly 63 56 0.4 33 12 17 56 11 S San Gabriel Vly 54 49 0.4 28 11 21 55 12 S Central LA Co 49 46 0.5 27 9 18 50 13 Santa Clarita Vly 69 62 0.3 26 13 15 74 15 San Gabriel Mts 63 58 0.3 31 12 24 61 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 63 60 0.3 26 10 16 67 Orange County: South Coast Air Basin 16 N Orange Co 54 49 0.2 30 10 14 53 17 Central Orange Co 41 39 0.2 19 10 9 53 18 N Coastal Orange Co 45 42 0.3 21 7 17 39 19 Saddleback Vly 55 51 0.2 30 8 12 47 20 Central Coastal 50 46 0.2 18 7 12 43 21 Capistrano Vly 52 48 0.3 22 7 10 44 Riverside County: South Coast Air Basin 22 Norco/Corona 64 58 0.3 42 10 13 61 23 Metro Riverside Co 70 62 0.3 47 12 14 74 24 Perris Vly 62 60 0.3 30 8 20 67 25 Lake Elsinore 59 57 0.3 15 7 9 58 26 Temecula Vly 55 53 0.3 31 8 9 49 27 Anza Vly 61 59 0.2 36 6 9 64 28 Hemet/San Jacinto 61 59 0.3 30 8 22 64 29 Banning 67 63 0.3 30 8 22 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 68 66 0.2 46 8 9 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 62 60 0.2 29 8 9 67 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 83 65 0.4 32 13 27 84 33 SW San Bernardino Vly 67 58 0.4 42 12 24 61 34 C San Bernardino Vly 72 64 0.5 29 10 25 80 35 E San Bernardino Vly 70 64 0.3 33 8 23 80 36 W San Bernardino Mtns 75 64 0.4 31 11 28 80 37 C San Bernardino Mtns 74 67 0.4 30 6 29 90 38 Big Bear Lake 69 65 0.3 30 6 23 84 San Bernardino County: Mojave Desert Air Basin 39 Phelan 65 62 0.3 29 6 31 74 40 Hesperia 65 61 0.3 29 8 33 71 41 Trona 61 57 0.2 30 6 25 58 42 Victorville 68 64 0.3 29 9 34 80 43 Yucca Vly 69 65 0.3 31 6 15 84 44 Barstow 71 66 0.3 24 7 26 87 45 Twentynine Palms 63 61 0.2 30 6 13 71 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., APR. 30, 2025, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 67 Ozone Banning Pass Area AQI: 77 Ozone Big Bear Lake AQI: 84 Ozone Central Mojave Desert AQI: 84 Ozone Coachella Valley/Low Desert AQI: 87 Ozone Hemet/Elsinore Area AQI: 67 Ozone Inland Orange County AQI: 53 PM2.5 Metropolitan Area AQI: 56 PM2.5 Northern Mojave Desert AQI: 87 Ozone Riverside Valley AQI: 74 Ozone San Bernardino Mountains AQI: 90 Ozone San Bernardino Valley AQI: 84 Ozone San Fernando/Santa Clarita Valleys AQI: 74 Ozone San Gabriel Mountains AQI: 61 Ozone San Gabriel Valley AQI: 61 Ozone Temecula/Anza Area AQI: 64 Ozone Victor Valley AQI: 80 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly cloudy skies with cooler temperatures are expected in the coastal and urban areas, while the mountains and deserts will see mostly sunny to partly cloudy skies with little temperature change. Inversion Base: 1605 FT | Breaking Temperature: 70 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2441 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, APRIL 30, 2025 IN THE SOUTH COAST AIR BASIN.