SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., JUN. 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 51 47 0.6 31 11 19 55 2 NW Coastal LA 43 38 0.2 30 9 15 50 3 SW Coastal LA 39 34 0.2 30 8 12 44 4 S Coastal LA 41 39 0.2 29 7 16 39 5 Southeast LA Co 49 44 0.5 31 9 20 50 6 W San Fernando Vly 58 55 0.3 28 9 9 51 7 E San Fernando Vly 55 52 0.4 31 11 16 55 8 W San Gabriel Vly 64 58 0.3 33 12 14 61 9 E San Gabriel Vly 70 64 0.3 36 11 15 80 10 Pomona Walnut Vly 66 60 0.4 38 12 17 67 11 S San Gabriel Vly 54 49 0.4 34 11 20 55 12 S Central LA Co 44 40 0.2 30 9 16 50 13 Santa Clarita Vly 74 69 0.2 28 11 16 97 15 San Gabriel Mts 69 65 0.3 36 11 21 84 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 76 70 0.2 25 11 24 100 Orange County: South Coast Air Basin 16 N Orange Co 53 48 0.1 36 10 12 53 17 Central Orange Co 47 43 0.2 27 9 6 50 18 N Coastal Orange Co 40 37 0.2 28 4 13 34 19 Saddleback Vly 46 42 0.2 36 4 10 39 20 Central Coastal 42 39 0.2 25 4 10 36 21 Capistrano Vly 44 41 0.3 28 6 9 38 Riverside County: South Coast Air Basin 22 Norco/Corona 64 59 0.3 46 11 13 64 23 Metro Riverside Co 72 65 0.3 50 14 13 84 24 Perris Vly 65 62 0.3 35 10 21 74 25 Lake Elsinore 56 51 0.3 22 8 9 47 26 Temecula Vly 48 45 0.3 33 8 9 44 27 Anza Vly 58 54 0.2 37 5 10 50 28 Hemet/San Jacinto 59 57 0.3 32 8 22 58 29 Banning 68 65 0.3 30 9 21 84 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 71 66 0.2 44 6 11 87 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 55 52 0.2 31 5 9 48 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 72 65 0.3 38 12 18 84 33 SW San Bernardino Vly 66 60 0.3 46 13 21 67 34 C San Bernardino Vly 78 71 0.4 34 12 25 101 35 E San Bernardino Vly 80 73 0.3 38 11 24 108 36 W San Bernardino Mtns 71 66 0.3 36 10 23 87 37 C San Bernardino Mtns 80 74 0.3 34 8 26 112 38 Big Bear Lake 73 70 0.3 32 7 26 100 San Bernardino County: Mojave Desert Air Basin 39 Phelan 80 71 0.3 31 7 25 101 40 Hesperia 67 64 0.3 30 8 28 80 41 Trona 66 59 0.2 26 6 21 64 42 Victorville 74 71 0.3 31 9 25 101 43 Yucca Vly 67 64 0.2 30 7 20 80 44 Barstow 75 71 0.2 32 10 44 101 45 Twentynine Palms 62 58 0.2 30 6 18 61 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., JUN. 01, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Coastal Area AQI: 50 PM2.5 Inland Orange County AQI: 50 PM2.5 Temecula/Anza Area AQI: 50 Ozone MODERATE in the following area(s): Antelope Valley AQI: 100 Ozone Banning Pass Area AQI: 84 Ozone Big Bear Lake AQI: 100 Ozone Central Mojave Desert AQI: 80 Ozone Coachella Valley/Low Desert AQI: 87 Ozone Hemet/Elsinore Area AQI: 74 Ozone Metropolitan Area AQI: 55 PM2.5 Riverside Valley AQI: 84 Ozone San Fernando/Santa Clarita Valleys AQI: 97 Ozone San Gabriel Mountains AQI: 84 Ozone San Gabriel Valley AQI: 80 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Northern Mojave Desert AQI: 101 Ozone San Bernardino Mountains AQI: 112 Ozone San Bernardino Valley AQI: 108 Ozone Victor Valley AQI: 101 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Persistent meteorology. Increasing temperatures and good ventilation. Onshore pressure gradients. Inversion Base: 1532 FT | Breaking Temperature: 75 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2428 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 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 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 MONDAY, JUNE 01, 2026 IN THE SOUTH COAST AIR BASIN.