SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., AUG. 09, 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 55 0.7 26 12 24 56 2 NW Coastal LA 48 43 0.3 27 9 10 50 3 SW Coastal LA 42 37 0.1 27 8 17 44 4 S Coastal LA 52 43 0.3 29 9 17 50 5 Southeast LA Co 62 52 0.5 30 11 21 55 6 W San Fernando Vly 71 64 0.3 28 9 14 80 7 E San Fernando Vly 71 62 0.5 28 11 20 74 8 W San Gabriel Vly 79 66 0.4 32 12 18 87 9 E San Gabriel Vly 99 85 0.5 36 13 21 150 10 Pomona Walnut Vly 87 77 0.5 40 14 23 122 11 S San Gabriel Vly 70 59 0.3 33 12 19 64 12 S Central LA Co 59 48 0.4 27 10 17 53 13 Santa Clarita Vly 88 78 0.3 30 11 12 126 15 San Gabriel Mts 78 70 0.4 37 11 22 100 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 71 66 0.3 36 12 16 87 Orange County: South Coast Air Basin 16 N Orange Co 67 59 0.2 39 12 9 64 17 Central Orange Co 54 48 0.3 29 10 8 53 18 N Coastal Orange Co 51 43 0.3 30 9 15 50 19 Saddleback Vly 65 57 0.2 39 13 12 58 20 Central Coastal 57 51 0.3 31 10 11 53 21 Capistrano Vly 57 52 0.3 32 10 10 53 Riverside County: South Coast Air Basin 22 Norco/Corona 77 69 0.4 49 13 15 97 23 Metro Riverside Co 84 78 0.5 54 13 19 126 24 Perris Vly 78 72 0.4 47 11 23 105 25 Lake Elsinore 70 63 0.4 32 10 10 77 26 Temecula Vly 60 56 0.3 36 9 11 54 27 Anza Vly 64 59 0.3 38 8 13 64 28 Hemet/San Jacinto 72 72 0.3 43 8 22 101 29 Banning 84 73 0.3 39 8 17 108 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 59 57 0.2 44 12 16 58 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 44 0.2 36 8 12 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 95 86 0.4 38 14 23 151 33 SW San Bernardino Vly 82 75 0.5 49 14 26 115 34 C San Bernardino Vly 94 86 0.4 49 12 30 151 35 E San Bernardino Vly 95 86 0.5 48 11 26 151 36 W San Bernardino Mtns 90 82 0.4 39 10 29 140 37 C San Bernardino Mtns 93 86 0.4 46 9 31 151 38 Big Bear Lake 76 71 0.3 43 8 25 101 San Bernardino County: Mojave Desert Air Basin 39 Phelan 68 65 0.3 34 8 31 84 40 Hesperia 75 70 0.3 31 8 33 100 41 Trona 57 55 0.2 32 9 24 51 42 Victorville 72 67 0.3 34 9 34 90 43 Yucca Vly 71 65 0.2 38 10 20 84 44 Barstow 72 66 0.3 37 10 33 87 45 Twentynine Palms 54 53 0.2 37 9 18 50 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., AUG. 09, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 87 Ozone Central Mojave Desert AQI: 84 Ozone Coachella Valley/Low Desert AQI: 58 Ozone Coastal Area AQI: 53 PM2.5 Inland Orange County AQI: 58 PM2.5 Metropolitan Area AQI: 64 Ozone Northern Mojave Desert AQI: 87 Ozone San Gabriel Mountains AQI: 100 Ozone Temecula/Anza Area AQI: 64 Ozone Victor Valley AQI: 100 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Banning Pass Area AQI: 108 Ozone Big Bear Lake AQI: 101 Ozone Hemet/Elsinore Area AQI: 105 Ozone Riverside Valley AQI: 126 Ozone San Fernando/Santa Clarita Valleys AQI: 126 Ozone San Gabriel Valley AQI: 150 Ozone UNHEALTHY in the following area(s): San Bernardino Mountains AQI: 151 Ozone San Bernardino Valley AQI: 151 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ High temperature and high humidity will continue throughout the region. Winds could increase and there's a potential for thunderstorms and showers over eastern mountain and desert areas. Overnight and morning low clouds and fog are expected to persist along the coast. Inversion Base: 1511 FT | Breaking Temperature: 92 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 1795 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 SUNDAY, AUGUST 09, 2026 IN THE SOUTH COAST AIR BASIN.