SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., FEB. 28, 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 66 58 0.8 34 19 38 69 2 NW Coastal LA 60 54 0.7 32 17 26 66 3 SW Coastal LA 57 52 0.5 33 14 22 60 4 S Coastal LA 51 46 0.6 32 13 38 58 5 Southeast LA Co 67 57 0.7 33 18 33 68 6 W San Fernando Vly 70 66 0.8 29 11 31 87 7 E San Fernando Vly 63 57 0.8 33 15 33 62 8 W San Gabriel Vly 95 78 0.5 33 15 27 126 9 E San Gabriel Vly 91 76 0.7 25 10 34 118 10 Pomona Walnut Vly 79 66 0.8 34 16 45 87 11 S San Gabriel Vly 69 57 0.6 33 19 29 69 12 S Central LA Co 64 56 0.7 33 17 23 66 13 Santa Clarita Vly 78 69 0.4 28 9 26 97 15 San Gabriel Mts 80 70 0.6 32 10 30 100 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 65 59 0.5 23 12 21 64 Orange County: South Coast Air Basin 16 N Orange Co 85 72 0.4 40 19 21 105 17 Central Orange Co 67 58 0.5 30 17 18 66 18 N Coastal Orange Co 68 60 0.5 29 6 32 67 19 Saddleback Vly 85 76 0.4 40 8 28 118 20 Central Coastal 78 70 0.4 28 9 25 100 21 Capistrano Vly 73 67 0.4 29 10 24 90 Riverside County: South Coast Air Basin 22 Norco/Corona 80 71 0.7 51 21 35 101 23 Metro Riverside Co 84 72 0.7 58 23 42 105 24 Perris Vly 75 65 0.6 38 13 37 84 25 Lake Elsinore 75 67 0.4 29 10 24 90 26 Temecula Vly 61 59 0.4 29 7 22 64 27 Anza Vly 57 55 0.3 31 8 20 51 28 Hemet/San Jacinto 66 62 0.6 28 9 32 74 29 Banning 64 60 0.5 23 7 26 67 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 74 65 0.3 35 17 19 84 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 55 51 0.3 26 8 16 47 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 84 73 0.6 22 10 31 108 33 SW San Bernardino Vly 82 71 0.7 50 18 41 101 34 C San Bernardino Vly 83 71 0.7 23 9 47 101 35 E San Bernardino Vly 80 72 0.6 35 8 39 105 36 W San Bernardino Mtns 77 69 0.6 26 7 37 97 37 C San Bernardino Mtns 78 71 0.6 27 4 36 101 38 Big Bear Lake 63 59 0.6 24 8 32 64 San Bernardino County: Mojave Desert Air Basin 39 Phelan 65 61 0.6 27 5 29 71 40 Hesperia 62 60 0.6 29 6 33 67 41 Trona 55 47 0.4 20 4 12 44 42 Victorville 50 47 0.5 28 8 27 44 43 Yucca Vly 60 57 0.4 25 8 26 58 44 Barstow 56 47 0.5 23 7 44 44 45 Twentynine Palms 57 54 0.4 25 8 24 50 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., FEB. 28, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Northern Mojave Desert AQI: 44 Ozone MODERATE in the following area(s): Antelope Valley AQI: 64 Ozone Banning Pass Area AQI: 67 Ozone Big Bear Lake AQI: 64 Ozone Central Mojave Desert AQI: 58 Ozone Coachella Valley/Low Desert AQI: 84 Ozone Coastal Area AQI: 100 Ozone Hemet/Elsinore Area AQI: 90 Ozone San Fernando/Santa Clarita Valleys AQI: 97 Ozone San Gabriel Mountains AQI: 100 Ozone Temecula/Anza Area AQI: 64 Ozone Victor Valley AQI: 71 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Inland Orange County AQI: 118 Ozone Metropolitan Area AQI: 105 Ozone Riverside Valley AQI: 105 Ozone San Bernardino Mountains AQI: 101 Ozone San Bernardino Valley AQI: 108 Ozone San Gabriel Valley AQI: 126 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Temperatures are expected to be slightly cooler on Saturday compared to Friday, but still well above average for this time of year. Coastal fog is possible. Inversion Base: 486 FT | Breaking Temperature: 81 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 896 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 8, 9, 16, 19, 22, 23, 32, 33, 34, 35, 37 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 SATURDAY, FEBRUARY 28, 2026 IN THE SOUTH COAST AIR BASIN.