SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., MAR. 16, 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 71 61 0.5 27 13 48 71 2 NW Coastal LA 66 56 0.8 26 16 39 64 3 SW Coastal LA 58 51 0.8 27 14 40 60 4 S Coastal LA 64 56 1.0 32 10 46 54 5 Southeast LA Co 70 60 1.4 32 13 46 67 6 W San Fernando Vly 64 56 1.1 25 8 36 54 7 E San Fernando Vly 73 64 1.0 27 8 47 80 8 W San Gabriel Vly 81 68 0.6 28 8 47 93 9 E San Gabriel Vly 82 66 0.5 22 6 40 87 10 Pomona Walnut Vly 82 64 0.7 32 12 46 80 11 S San Gabriel Vly 72 62 1.0 31 13 43 74 12 S Central LA Co 65 57 1.4 29 13 43 58 13 Santa Clarita Vly 62 54 0.5 27 5 25 50 15 San Gabriel Mts 65 56 0.7 30 4 43 54 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 55 48 0.5 31 10 31 53 Orange County: South Coast Air Basin 16 N Orange Co 76 65 0.7 34 13 34 84 17 Central Orange Co 69 58 0.9 34 12 43 61 18 N Coastal Orange Co 64 55 0.9 31 6 43 51 19 Saddleback Vly 71 63 0.4 34 5 41 77 20 Central Coastal 65 57 0.6 29 9 35 58 21 Capistrano Vly 67 59 0.4 26 7 31 64 Riverside County: South Coast Air Basin 22 Norco/Corona 74 61 0.7 40 11 43 71 23 Metro Riverside Co 74 58 0.7 58 13 43 61 24 Perris Vly 61 55 0.6 40 10 40 53 25 Lake Elsinore 65 58 0.5 26 8 30 61 26 Temecula Vly 58 52 0.4 25 5 26 48 27 Anza Vly 50 46 0.3 27 3 22 43 28 Hemet/San Jacinto 54 51 0.6 31 5 39 47 29 Banning 51 48 0.5 28 3 40 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 50 47 0.3 36 3 19 44 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 48 46 0.3 25 3 15 43 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 76 60 0.5 25 10 39 67 33 SW San Bernardino Vly 76 60 0.7 39 14 45 67 34 C San Bernardino Vly 63 50 0.7 33 7 49 46 35 E San Bernardino Vly 59 51 0.7 47 5 41 47 36 W San Bernardino Mtns 58 50 0.6 31 5 42 46 37 C San Bernardino Mtns 46 44 0.6 34 5 41 41 38 Big Bear Lake 46 45 0.6 31 4 39 42 San Bernardino County: Mojave Desert Air Basin 39 Phelan 50 48 0.5 33 5 36 44 40 Hesperia 48 44 0.6 36 5 40 41 41 Trona 44 40 0.3 14 3 8 37 42 Victorville 50 44 0.5 34 7 36 41 43 Yucca Vly 44 42 0.4 27 3 28 39 44 Barstow 51 45 0.4 21 4 52 49 45 Twentynine Palms 43 41 0.3 26 3 25 38 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., MAR. 16, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 44 Ozone Big Bear Lake AQI: 42 Ozone Central Mojave Desert AQI: 39 Ozone Coachella Valley/Low Desert AQI: 44 Ozone Northern Mojave Desert AQI: 49 NO2 San Bernardino Mountains AQI: 46 Ozone Temecula/Anza Area AQI: 48 Ozone Victor Valley AQI: 44 Ozone MODERATE in the following area(s): Antelope Valley AQI: 53 PM2.5 Coastal Area AQI: 64 PM2.5 Hemet/Elsinore Area AQI: 61 Ozone Inland Orange County AQI: 77 Ozone Metropolitan Area AQI: 84 Ozone Riverside Valley AQI: 71 Ozone San Bernardino Valley AQI: 67 Ozone San Fernando/Santa Clarita Valleys AQI: 80 Ozone San Gabriel Mountains AQI: 54 Ozone San Gabriel Valley AQI: 93 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny with warm temperatures expected. Inversion Base: 486 FT | Breaking Temperature: 78 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2320 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 MONDAY, MARCH 16, 2026 IN THE SOUTH COAST AIR BASIN.