SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., MAR. 15, 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 64 55 0.7 30 11 37 55 2 NW Coastal LA 60 53 0.8 27 13 24 58 3 SW Coastal LA 53 49 0.9 29 10 38 53 4 S Coastal LA 60 54 0.8 32 9 32 50 5 Southeast LA Co 66 56 1.2 33 10 34 54 6 W San Fernando Vly 57 50 0.8 25 8 27 46 7 E San Fernando Vly 63 55 0.8 29 9 34 51 8 W San Gabriel Vly 70 60 0.6 28 8 34 67 9 E San Gabriel Vly 73 60 0.5 22 5 27 67 10 Pomona Walnut Vly 75 62 0.7 32 11 40 74 11 S San Gabriel Vly 66 56 0.9 32 10 33 54 12 S Central LA Co 60 55 1.2 30 10 27 53 13 Santa Clarita Vly 57 49 0.3 24 6 18 45 15 San Gabriel Mts 57 50 0.5 27 5 32 46 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 49 47 0.4 19 9 32 50 Orange County: South Coast Air Basin 16 N Orange Co 74 62 0.8 35 13 20 74 17 Central Orange Co 69 59 0.9 34 12 38 64 18 N Coastal Orange Co 65 57 0.8 32 7 32 58 19 Saddleback Vly 69 64 0.4 35 6 33 80 20 Central Coastal 67 61 0.5 30 7 26 71 21 Capistrano Vly 65 60 0.4 27 7 21 67 Riverside County: South Coast Air Basin 22 Norco/Corona 66 59 0.6 38 14 34 64 23 Metro Riverside Co 62 56 0.6 40 14 35 60 24 Perris Vly 53 50 0.6 34 9 31 50 25 Lake Elsinore 61 53 0.4 27 7 18 49 26 Temecula Vly 52 48 0.4 26 5 17 44 27 Anza Vly 50 45 0.3 23 3 18 42 28 Hemet/San Jacinto 50 48 0.5 29 4 28 44 29 Banning 50 48 0.5 26 3 25 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 55 49 0.2 36 5 19 45 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 43 0.2 23 4 15 40 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 69 59 0.6 24 9 28 64 33 SW San Bernardino Vly 69 59 0.7 37 14 37 64 34 C San Bernardino Vly 53 47 0.6 32 7 32 44 35 E San Bernardino Vly 51 48 0.6 36 5 33 44 36 W San Bernardino Mtns 54 48 0.5 28 4 31 44 37 C San Bernardino Mtns 52 48 0.6 32 4 32 44 38 Big Bear Lake 49 47 0.6 29 4 30 44 San Bernardino County: Mojave Desert Air Basin 39 Phelan 50 48 0.5 27 4 33 44 40 Hesperia 47 44 0.5 30 5 34 41 41 Trona 47 42 0.3 15 4 9 39 42 Victorville 50 46 0.5 29 7 34 43 43 Yucca Vly 52 48 0.3 27 3 25 44 44 Barstow 52 47 0.4 21 5 44 44 45 Twentynine Palms 50 46 0.3 26 3 23 43 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., MAR. 15, 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: 44 Ozone Central Mojave Desert AQI: 44 Ozone Coachella Valley/Low Desert AQI: 45 Ozone Hemet/Elsinore Area AQI: 50 PM2.5 Northern Mojave Desert AQI: 44 Ozone San Bernardino Mountains AQI: 44 Ozone San Gabriel Mountains AQI: 46 Ozone Temecula/Anza Area AQI: 44 Ozone Victor Valley AQI: 44 Ozone MODERATE in the following area(s): Coastal Area AQI: 71 Ozone Inland Orange County AQI: 80 Ozone Metropolitan Area AQI: 74 Ozone Riverside Valley AQI: 64 Ozone San Bernardino Valley AQI: 64 Ozone San Fernando/Santa Clarita Valleys AQI: 51 Ozone San Gabriel Valley AQI: 74 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Partly cloudy skies becoming mostly sunny with warm temperatures are expected. Morning clouds and fog are possible along the coast. Inversion Base: 486 FT | Breaking Temperature: 69 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2762 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 SUNDAY, MARCH 15, 2026 IN THE SOUTH COAST AIR BASIN.