SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., OCT. 01, 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 72 64 0.6 59 16 25 80 2 NW Coastal LA 62 55 0.4 53 16 19 64 3 SW Coastal LA 55 50 0.2 54 12 17 56 4 S Coastal LA 58 54 0.3 49 11 26 55 5 Southeast LA Co 68 61 0.5 53 14 29 71 6 W San Fernando Vly 78 69 0.5 49 12 19 97 7 E San Fernando Vly 80 71 0.5 58 15 25 101 8 W San Gabriel Vly 80 72 0.4 58 14 25 105 9 E San Gabriel Vly 96 79 0.5 30 13 34 129 10 Pomona Walnut Vly 90 72 0.7 39 16 29 105 11 S San Gabriel Vly 75 66 0.5 53 15 29 87 12 S Central LA Co 60 57 0.4 54 14 20 60 13 Santa Clarita Vly 80 70 0.4 54 10 23 100 15 San Gabriel Mts 80 72 0.5 58 11 32 105 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 63 57 0.4 57 14 36 60 Orange County: South Coast Air Basin 16 N Orange Co 78 66 0.3 43 15 21 87 17 Central Orange Co 69 59 0.4 28 14 15 64 18 N Coastal Orange Co 54 49 0.3 36 11 23 55 19 Saddleback Vly 74 63 0.2 43 13 21 77 20 Central Coastal 64 55 0.3 29 12 21 56 21 Capistrano Vly 67 59 0.4 30 11 22 64 Riverside County: South Coast Air Basin 22 Norco/Corona 92 77 0.5 58 16 24 122 23 Metro Riverside Co 103 85 0.5 66 18 24 150 24 Perris Vly 91 75 0.5 45 14 34 115 25 Lake Elsinore 84 69 0.4 30 14 22 97 26 Temecula Vly 60 56 0.4 34 7 21 54 27 Anza Vly 60 58 0.3 37 6 20 61 28 Hemet/San Jacinto 77 69 0.4 38 9 36 97 29 Banning 67 63 0.4 33 6 36 77 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 68 60 0.2 43 7 18 67 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 51 49 0.2 29 6 18 45 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 96 81 0.6 36 16 34 136 33 SW San Bernardino Vly 92 76 0.6 58 18 39 118 34 C San Bernardino Vly 94 80 0.6 45 14 45 133 35 E San Bernardino Vly 92 81 0.5 49 10 36 136 36 W San Bernardino Mtns 90 78 0.5 37 11 38 126 37 C San Bernardino Mtns 77 68 0.4 42 7 37 93 38 Big Bear Lake 62 60 0.4 38 6 36 67 San Bernardino County: Mojave Desert Air Basin 39 Phelan 68 64 0.4 39 6 33 80 40 Hesperia 61 56 0.4 29 8 36 54 41 Trona 47 43 0.2 19 6 51 48 42 Victorville 64 59 0.4 36 11 32 64 43 Yucca Vly 58 54 0.3 27 6 27 50 44 Barstow 58 55 0.3 32 9 49 51 45 Twentynine Palms 54 51 0.3 27 6 25 47 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., OCT. 01, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Central Mojave Desert AQI: 50 Ozone MODERATE in the following area(s): Antelope Valley AQI: 60 PM2.5 Banning Pass Area AQI: 77 Ozone Big Bear Lake AQI: 67 Ozone Coachella Valley/Low Desert AQI: 67 Ozone Coastal Area AQI: 64 PM2.5 Inland Orange County AQI: 77 Ozone Metropolitan Area AQI: 87 Ozone Northern Mojave Desert AQI: 51 Ozone Temecula/Anza Area AQI: 61 Ozone Victor Valley AQI: 80 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Hemet/Elsinore Area AQI: 115 Ozone Riverside Valley AQI: 150 Ozone San Bernardino Mountains AQI: 126 Ozone San Bernardino Valley AQI: 136 Ozone San Fernando/Santa Clarita Valleys AQI: 101 Ozone San Gabriel Mountains AQI: 105 Ozone San Gabriel Valley AQI: 129 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Warming on Thursday and light offshore pressure gradients. Inversion Base: 1386 FT | Breaking Temperature: 84 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2195 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 THURSDAY, OCTOBER 01, 2026 IN THE SOUTH COAST AIR BASIN.