SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., MAY. 01, 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 50 45 0.4 31 13 18 58 2 NW Coastal LA 48 43 0.3 28 8 10 44 3 SW Coastal LA 42 39 0.2 29 7 13 39 4 S Coastal LA 49 45 0.2 26 8 19 44 5 Southeast LA Co 48 45 0.3 28 10 20 53 6 W San Fernando Vly 59 53 0.3 27 9 8 50 7 E San Fernando Vly 55 50 0.3 31 12 16 56 8 W San Gabriel Vly 55 52 0.3 31 14 16 60 9 E San Gabriel Vly 65 56 0.3 29 10 16 54 10 Pomona Walnut Vly 64 57 0.4 30 11 19 58 11 S San Gabriel Vly 51 48 0.3 30 11 20 55 12 S Central LA Co 49 44 0.3 29 9 14 50 13 Santa Clarita Vly 63 56 0.2 28 13 13 58 15 San Gabriel Mts 60 55 0.3 30 13 21 58 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 64 61 0.2 29 11 24 71 Orange County: South Coast Air Basin 16 N Orange Co 47 45 0.2 27 10 11 53 17 Central Orange Co 40 38 0.2 17 9 10 50 18 N Coastal Orange Co 44 41 0.2 20 7 16 39 19 Saddleback Vly 43 42 0.2 27 7 12 39 20 Central Coastal 45 43 0.2 16 7 11 40 21 Capistrano Vly 48 46 0.2 22 7 9 43 Riverside County: South Coast Air Basin 22 Norco/Corona 59 55 0.3 38 11 14 55 23 Metro Riverside Co 69 62 0.3 42 13 13 74 24 Perris Vly 59 55 0.3 31 9 17 51 25 Lake Elsinore 53 49 0.3 15 7 8 45 26 Temecula Vly 48 45 0.2 30 7 9 42 27 Anza Vly 59 56 0.2 36 7 10 54 28 Hemet/San Jacinto 57 54 0.3 29 7 17 50 29 Banning 70 62 0.3 29 10 12 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 71 65 0.2 46 7 11 84 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 60 58 0.2 29 7 11 61 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 63 55 0.3 29 12 18 56 33 SW San Bernardino Vly 61 54 0.3 38 12 21 56 34 C San Bernardino Vly 67 57 0.3 28 11 24 58 35 E San Bernardino Vly 69 59 0.3 35 12 20 64 36 W San Bernardino Mtns 68 60 0.3 29 10 25 67 37 C San Bernardino Mtns 79 68 0.3 28 7 27 93 38 Big Bear Lake 64 60 0.3 30 9 26 67 San Bernardino County: Mojave Desert Air Basin 39 Phelan 63 61 0.3 28 7 30 71 40 Hesperia 64 60 0.3 27 9 32 67 41 Trona 60 53 0.2 23 7 13 49 42 Victorville 67 64 0.3 28 9 32 80 43 Yucca Vly 65 64 0.2 31 7 21 80 44 Barstow 67 65 0.2 28 7 47 84 45 Twentynine Palms 61 60 0.2 30 7 19 67 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., MAY. 01, 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 Inland Orange County AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 71 Ozone Banning Pass Area AQI: 74 Ozone Big Bear Lake AQI: 67 Ozone Central Mojave Desert AQI: 80 Ozone Coachella Valley/Low Desert AQI: 84 Ozone Hemet/Elsinore Area AQI: 51 Ozone Metropolitan Area AQI: 58 PM2.5 Northern Mojave Desert AQI: 84 Ozone Riverside Valley AQI: 74 Ozone San Bernardino Mountains AQI: 93 Ozone San Bernardino Valley AQI: 64 Ozone San Fernando/Santa Clarita Valleys AQI: 58 PM2.5 San Gabriel Mountains AQI: 58 PM2.5 San Gabriel Valley AQI: 60 PM2.5 Temecula/Anza Area AQI: 54 Ozone Victor Valley AQI: 80 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Morning clouds clearing to sunny skies are expected in most areas. Inversion Base: 3003 FT | Breaking Temperature: 73 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 3248 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 THURSDAY, MAY 01, 2025 IN THE SOUTH COAST AIR BASIN.