SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: THU., JUN. 04, 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 59 0.5 29 19 20 69 2 NW Coastal LA 59 56 0.3 28 15 13 62 3 SW Coastal LA 42 40 0.1 28 12 13 56 4 S Coastal LA 53 49 0.1 28 9 15 50 5 Southeast LA Co 62 55 0.4 30 13 17 58 6 W San Fernando Vly 76 71 0.3 27 13 10 101 7 E San Fernando Vly 71 65 0.4 29 16 19 84 8 W San Gabriel Vly 73 66 0.3 34 17 12 87 9 E San Gabriel Vly 94 81 0.4 41 13 18 136 10 Pomona Walnut Vly 80 72 0.3 41 15 16 105 11 S San Gabriel Vly 68 61 0.3 36 15 14 71 12 S Central LA Co 58 52 0.2 28 13 12 58 13 Santa Clarita Vly 96 86 0.3 27 13 21 151 15 San Gabriel Mts 82 75 0.4 41 13 25 115 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 86 79 0.3 25 12 28 129 Orange County: South Coast Air Basin 16 N Orange Co 67 59 0.1 36 13 7 64 17 Central Orange Co 55 48 0.3 26 12 5 56 18 N Coastal Orange Co 45 41 0.2 27 7 13 39 19 Saddleback Vly 54 48 0.2 36 7 11 44 20 Central Coastal 49 43 0.2 27 7 11 40 21 Capistrano Vly 54 48 0.2 30 9 12 50 Riverside County: South Coast Air Basin 22 Norco/Corona 79 67 0.3 45 15 13 90 23 Metro Riverside Co 88 75 0.3 49 16 12 115 24 Perris Vly 85 77 0.3 37 14 20 122 25 Lake Elsinore 78 70 0.2 27 12 13 100 26 Temecula Vly 65 61 0.2 35 10 12 71 27 Anza Vly 70 67 0.2 38 7 12 90 28 Hemet/San Jacinto 80 74 0.3 32 10 21 112 29 Banning 92 86 0.3 31 10 19 151 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 79 76 0.2 44 9 13 118 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 61 56 0.1 32 7 10 54 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 91 82 0.5 38 15 21 140 33 SW San Bernardino Vly 82 71 0.4 45 16 23 101 34 C San Bernardino Vly 98 85 0.4 34 14 28 150 35 E San Bernardino Vly 100 86 0.4 39 13 23 151 36 W San Bernardino Mtns 89 82 0.4 38 11 24 140 37 C San Bernardino Mtns 100 92 0.4 34 7 25 166 38 Big Bear Lake 88 82 0.3 32 7 24 140 San Bernardino County: Mojave Desert Air Basin 39 Phelan 88 83 0.3 32 7 23 143 40 Hesperia 77 73 0.3 30 9 25 108 41 Trona 64 61 0.2 30 7 18 71 42 Victorville 85 81 0.3 30 10 23 136 43 Yucca Vly 84 80 0.2 30 8 19 133 44 Barstow 80 76 0.3 33 9 38 118 45 Twentynine Palms 75 70 0.2 30 7 17 100 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON THU., JUN. 04, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Coastal Area AQI: 62 PM2.5 Inland Orange County AQI: 56 PM2.5 Metropolitan Area AQI: 69 PM2.5 Temecula/Anza Area AQI: 90 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Antelope Valley AQI: 129 Ozone Big Bear Lake AQI: 140 Ozone Central Mojave Desert AQI: 133 Ozone Coachella Valley/Low Desert AQI: 118 Ozone Hemet/Elsinore Area AQI: 122 Ozone Northern Mojave Desert AQI: 118 Ozone Riverside Valley AQI: 115 Ozone San Gabriel Mountains AQI: 115 Ozone San Gabriel Valley AQI: 136 Ozone Victor Valley AQI: 143 Ozone UNHEALTHY in the following area(s): Banning Pass Area AQI: 151 Ozone San Bernardino Mountains AQI: 166 Ozone San Bernardino Valley AQI: 151 Ozone San Fernando/Santa Clarita Valleys AQI: 151 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with warm temperatures are expected. Partly cloudy skies becoming mostly sunny with morning patchy fog are expected in the coastal and mountain areas. Inversion Base: 1492 FT | Breaking Temperature: 84 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2225 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: MARGINAL-BURN Burning is prohibited in source/receptor area 30 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, JUNE 04, 2026 IN THE SOUTH COAST AIR BASIN.