SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: TUE., MAR. 31, 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 46 42 0.9 23 12 26 56 2 NW Coastal LA 47 39 0.5 22 13 20 58 3 SW Coastal LA 43 36 0.3 22 13 17 58 4 S Coastal LA 53 50 0.3 22 10 32 53 5 Southeast LA Co 46 43 0.6 22 10 26 53 6 W San Fernando Vly 48 45 0.3 21 9 18 50 7 E San Fernando Vly 51 48 0.6 22 10 22 53 8 W San Gabriel Vly 51 45 0.4 22 8 17 44 9 E San Gabriel Vly 52 48 0.5 22 7 25 44 10 Pomona Walnut Vly 48 45 0.5 26 11 32 55 11 S San Gabriel Vly 49 45 0.4 22 10 22 53 12 S Central LA Co 41 39 0.4 22 11 20 55 13 Santa Clarita Vly 49 45 0.3 21 10 20 53 15 San Gabriel Mts 46 43 0.4 26 7 23 40 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 48 46 0.3 19 9 10 50 Orange County: South Coast Air Basin 16 N Orange Co 47 44 0.2 24 10 20 53 17 Central Orange Co 45 43 0.4 22 9 14 50 18 N Coastal Orange Co 54 47 0.3 21 7 27 44 19 Saddleback Vly 52 46 0.3 24 6 20 43 20 Central Coastal 55 49 0.3 20 7 17 45 21 Capistrano Vly 56 51 0.3 27 8 14 47 Riverside County: South Coast Air Basin 22 Norco/Corona 51 48 0.5 28 13 27 58 23 Metro Riverside Co 54 52 0.8 29 15 28 62 24 Perris Vly 49 47 0.5 35 9 27 50 25 Lake Elsinore 54 49 0.4 17 11 13 55 26 Temecula Vly 48 45 0.3 38 8 15 44 27 Anza Vly 54 52 0.3 45 6 18 48 28 Hemet/San Jacinto 51 48 0.3 34 7 23 44 29 Banning 51 48 0.3 34 6 13 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 57 55 0.2 58 6 23 52 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 49 47 0.2 35 6 16 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 33 31 0.4 28 12 23 56 33 SW San Bernardino Vly 47 44 0.4 30 14 34 60 34 C San Bernardino Vly 49 46 0.3 41 10 41 53 35 E San Bernardino Vly 55 51 0.6 38 7 29 47 36 W San Bernardino Mtns 43 41 0.3 30 9 29 50 37 C San Bernardino Mtns 55 49 0.3 39 7 30 45 38 Big Bear Lake 48 46 0.3 36 6 25 43 San Bernardino County: Mojave Desert Air Basin 39 Phelan 50 48 0.3 28 6 20 44 40 Hesperia 51 48 0.3 29 8 26 44 41 Trona 41 39 0.2 39 6 15 36 42 Victorville 51 48 0.3 31 8 18 44 43 Yucca Vly 51 49 0.2 35 6 23 45 44 Barstow 55 51 0.3 37 6 31 47 45 Twentynine Palms 48 47 0.2 35 6 22 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON TUE., MAR. 31, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 50 PM2.5 Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 43 Ozone Central Mojave Desert AQI: 45 Ozone Inland Orange County AQI: 50 PM2.5 Northern Mojave Desert AQI: 47 Ozone San Bernardino Mountains AQI: 50 PM2.5 San Gabriel Mountains AQI: 40 Ozone Temecula/Anza Area AQI: 48 Ozone Victor Valley AQI: 44 PM2.5 MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 52 PM10 Coastal Area AQI: 58 PM2.5 Hemet/Elsinore Area AQI: 55 PM2.5 Metropolitan Area AQI: 56 PM2.5 Riverside Valley AQI: 62 PM2.5 San Bernardino Valley AQI: 60 PM2.5 San Fernando/Santa Clarita Valleys AQI: 53 PM2.5 San Gabriel Valley AQI: 55 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ On Tuesday, the weather will be cooler due to strengthened onshore flow. Wind gusts may reach 35 to 45 mph into Tuesday evening, and 45 to 55 mph for late Tuesday night into Wednesday. Inversion Base: 2291 FT | Breaking Temperature: 76 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2722 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 TUESDAY, MARCH 31, 2026 IN THE SOUTH COAST AIR BASIN.