SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: FRI., MAR. 13, 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 59 51 1.0 25 14 47 60 2 NW Coastal LA 53 47 0.9 24 14 45 60 3 SW Coastal LA 49 45 0.7 25 16 46 64 4 S Coastal LA 57 50 1.7 28 15 63 62 5 Southeast LA Co 60 52 1.6 29 14 55 60 6 W San Fernando Vly 62 55 0.9 23 9 37 51 7 E San Fernando Vly 63 55 0.9 25 10 51 53 8 W San Gabriel Vly 69 59 0.6 25 10 55 64 9 E San Gabriel Vly 80 63 0.6 17 8 55 77 10 Pomona Walnut Vly 80 61 0.7 31 12 57 71 11 S San Gabriel Vly 64 54 0.9 28 13 53 58 12 S Central LA Co 57 52 1.6 27 14 47 60 13 Santa Clarita Vly 67 55 0.5 23 9 30 51 15 San Gabriel Mts 65 56 0.6 24 7 52 54 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 56 53 0.5 21 11 30 55 Orange County: South Coast Air Basin 16 N Orange Co 68 58 0.9 35 14 47 61 17 Central Orange Co 58 52 0.9 30 15 44 62 18 N Coastal Orange Co 69 61 1.4 28 16 56 71 19 Saddleback Vly 74 69 0.4 35 7 45 97 20 Central Coastal 73 67 0.7 26 7 42 90 21 Capistrano Vly 71 67 0.5 24 7 36 90 Riverside County: South Coast Air Basin 22 Norco/Corona 80 69 0.7 43 12 49 97 23 Metro Riverside Co 79 65 0.7 48 14 55 84 24 Perris Vly 69 62 0.7 32 10 49 74 25 Lake Elsinore 77 68 0.5 23 7 33 93 26 Temecula Vly 58 56 0.4 27 7 29 54 27 Anza Vly 64 61 0.3 30 3 23 71 28 Hemet/San Jacinto 62 59 0.7 26 5 45 64 29 Banning 64 57 0.6 25 3 44 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 61 54 0.2 34 4 16 50 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 45 42 0.3 26 3 18 39 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 92 73 0.6 24 11 50 108 33 SW San Bernardino Vly 78 63 0.8 43 14 54 77 34 C San Bernardino Vly 76 64 0.8 28 10 51 80 35 E San Bernardino Vly 72 63 0.8 33 7 51 77 36 W San Bernardino Mtns 80 66 0.7 27 7 47 87 37 C San Bernardino Mtns 71 60 0.8 30 6 45 67 38 Big Bear Lake 65 61 0.7 30 6 45 71 San Bernardino County: Mojave Desert Air Basin 39 Phelan 60 56 0.6 29 4 39 54 40 Hesperia 59 53 0.7 31 7 43 49 41 Trona 51 45 0.3 29 4 55 52 42 Victorville 53 48 0.6 33 9 38 50 43 Yucca Vly 64 62 0.4 29 3 25 74 44 Barstow 55 49 0.5 37 5 42 45 45 Twentynine Palms 49 52 0.3 29 3 23 48 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON FRI., MAR. 13, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coachella Valley/Low Desert AQI: 50 Ozone MODERATE in the following area(s): Antelope Valley AQI: 55 PM2.5 Banning Pass Area AQI: 58 Ozone Big Bear Lake AQI: 71 Ozone Central Mojave Desert AQI: 74 Ozone Coastal Area AQI: 90 Ozone Hemet/Elsinore Area AQI: 93 Ozone Inland Orange County AQI: 97 Ozone Metropolitan Area AQI: 61 Ozone Northern Mojave Desert AQI: 52 NO2 Riverside Valley AQI: 97 Ozone San Bernardino Mountains AQI: 87 Ozone San Fernando/Santa Clarita Valleys AQI: 53 PM2.5 San Gabriel Mountains AQI: 54 Ozone San Gabriel Valley AQI: 77 Ozone Temecula/Anza Area AQI: 71 Ozone Victor Valley AQI: 54 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): San Bernardino Valley AQI: 108 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Sunny skies with warm temperatures are expected. Inversion Base: 486 FT | Breaking Temperature: 82 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 1595 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: NO-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 FRIDAY, MARCH 13, 2026 IN THE SOUTH COAST AIR BASIN.