SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., MAR. 12, 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 63 56 0.6 26 13 49 58 2 NW Coastal LA 56 50 0.9 24 11 34 55 3 SW Coastal LA 57 49 0.9 26 13 48 58 4 S Coastal LA 58 51 1.5 33 13 54 58 5 Southeast LA Co 65 55 1.5 34 14 48 60 6 W San Fernando Vly 55 52 0.8 23 8 29 48 7 E San Fernando Vly 61 55 0.8 26 7 43 51 8 W San Gabriel Vly 70 62 0.6 25 7 42 74 9 E San Gabriel Vly 73 63 0.5 17 4 47 77 10 Pomona Walnut Vly 71 59 0.7 32 10 50 64 11 S San Gabriel Vly 68 58 0.9 32 11 48 61 12 S Central LA Co 62 54 1.5 29 14 32 60 13 Santa Clarita Vly 56 53 0.4 24 6 23 49 15 San Gabriel Mts 59 55 0.6 25 5 41 51 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 56 53 0.4 25 11 35 55 Orange County: South Coast Air Basin 16 N Orange Co 68 59 0.7 36 14 36 64 17 Central Orange Co 60 53 0.9 36 14 40 60 18 N Coastal Orange Co 59 53 1.3 32 17 48 66 19 Saddleback Vly 64 60 0.4 35 7 39 67 20 Central Coastal 59 54 0.7 30 5 35 50 21 Capistrano Vly 59 54 0.4 27 5 29 50 Riverside County: South Coast Air Basin 22 Norco/Corona 64 58 0.7 38 16 41 64 23 Metro Riverside Co 65 57 0.7 42 15 41 62 24 Perris Vly 61 55 0.6 33 9 38 51 25 Lake Elsinore 63 57 0.4 26 7 28 58 26 Temecula Vly 52 49 0.4 27 6 24 45 27 Anza Vly 53 51 0.3 30 3 20 47 28 Hemet/San Jacinto 55 52 0.5 26 4 36 48 29 Banning 55 52 0.5 23 3 34 48 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 54 0.3 35 5 17 50 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 48 47 0.3 24 3 13 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 73 62 0.5 24 10 35 74 33 SW San Bernardino Vly 67 58 0.7 37 14 46 61 34 C San Bernardino Vly 61 54 0.6 28 8 47 50 35 E San Bernardino Vly 59 55 0.6 36 4 39 51 36 W San Bernardino Mtns 63 56 0.5 27 5 39 54 37 C San Bernardino Mtns 55 49 0.6 30 5 39 45 38 Big Bear Lake 53 51 0.5 26 6 36 47 San Bernardino County: Mojave Desert Air Basin 39 Phelan 56 54 0.5 29 4 35 50 40 Hesperia 56 51 0.5 32 7 37 47 41 Trona 52 48 0.3 14 4 7 44 42 Victorville 55 51 0.5 31 9 35 50 43 Yucca Vly 54 51 0.4 24 3 24 47 44 Barstow 53 51 0.4 20 5 43 47 45 Twentynine Palms 50 48 0.3 24 3 21 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., MAR. 12, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Banning Pass Area AQI: 48 Ozone Big Bear Lake AQI: 47 Ozone Central Mojave Desert AQI: 47 Ozone Coachella Valley/Low Desert AQI: 50 Ozone Northern Mojave Desert AQI: 47 Ozone Temecula/Anza Area AQI: 47 Ozone Victor Valley AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 55 PM2.5 Coastal Area AQI: 66 PM2.5 Hemet/Elsinore Area AQI: 58 Ozone Inland Orange County AQI: 67 Ozone Metropolitan Area AQI: 64 Ozone Riverside Valley AQI: 64 PM2.5 San Bernardino Mountains AQI: 54 Ozone San Bernardino Valley AQI: 74 Ozone San Fernando/Santa Clarita Valleys AQI: 51 Ozone San Gabriel Mountains AQI: 51 Ozone San Gabriel Valley AQI: 77 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with warm temperatures are expected. Inversion Base: 486 FT | Breaking Temperature: 80 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 3497 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, MARCH 12, 2026 IN THE SOUTH COAST AIR BASIN.