SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., MAY. 30, 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 54 50 0.3 24 8 18 46 2 NW Coastal LA 48 42 0.3 22 7 14 39 3 SW Coastal LA 42 36 0.2 24 7 11 39 4 S Coastal LA 49 47 0.2 28 7 13 44 5 Southeast LA Co 54 50 0.4 29 8 17 46 6 W San Fernando Vly 58 54 0.4 20 6 11 50 7 E San Fernando Vly 57 54 0.4 23 8 15 50 8 W San Gabriel Vly 60 56 0.3 25 9 11 54 9 E San Gabriel Vly 70 61 0.3 26 8 13 71 10 Pomona Walnut Vly 64 56 0.4 32 9 17 54 11 S San Gabriel Vly 59 54 0.3 29 8 17 50 12 S Central LA Co 50 46 0.4 26 8 11 44 13 Santa Clarita Vly 63 59 0.3 20 8 12 64 15 San Gabriel Mts 60 56 0.3 30 8 16 54 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 57 54 0.3 16 9 17 50 Orange County: South Coast Air Basin 16 N Orange Co 57 53 0.2 32 8 9 49 17 Central Orange Co 48 45 0.3 30 8 10 44 18 N Coastal Orange Co 44 43 0.2 27 4 12 40 19 Saddleback Vly 45 44 0.2 31 4 11 41 20 Central Coastal 45 43 0.2 25 4 10 40 21 Capistrano Vly 46 43 0.3 22 5 9 40 Riverside County: South Coast Air Basin 22 Norco/Corona 59 57 0.3 35 9 13 58 23 Metro Riverside Co 68 64 0.3 37 11 13 80 24 Perris Vly 60 56 0.3 35 8 17 54 25 Lake Elsinore 53 51 0.3 20 7 9 47 26 Temecula Vly 50 45 0.3 23 7 8 42 27 Anza Vly 55 54 0.2 27 7 7 50 28 Hemet/San Jacinto 61 57 0.3 33 7 17 58 29 Banning 75 67 0.3 31 8 15 90 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 64 0.2 57 9 5 80 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 54 53 0.2 31 6 7 49 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 69 62 0.4 33 11 13 74 33 SW San Bernardino Vly 64 59 0.4 35 10 19 64 34 C San Bernardino Vly 77 70 0.4 39 10 25 100 35 E San Bernardino Vly 72 66 0.3 37 10 19 87 36 W San Bernardino Mtns 71 65 0.3 32 9 21 84 37 C San Bernardino Mtns 78 68 0.3 36 6 23 93 38 Big Bear Lake 67 62 0.3 34 6 21 74 San Bernardino County: Mojave Desert Air Basin 39 Phelan 60 56 0.3 25 5 23 54 40 Hesperia 63 56 0.3 25 7 25 54 41 Trona 58 53 0.2 14 6 11 49 42 Victorville 60 56 0.3 25 7 24 54 43 Yucca Vly 63 61 0.2 39 7 15 71 44 Barstow 60 57 0.3 24 7 38 58 45 Twentynine Palms 60 57 0.2 37 7 14 58 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SAT., MAY. 30, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 50 PM2.5 Coastal Area AQI: 44 Ozone Inland Orange County AQI: 44 PM2.5 Metropolitan Area AQI: 49 Ozone Temecula/Anza Area AQI: 50 Ozone MODERATE in the following area(s): Banning Pass Area AQI: 90 Ozone Big Bear Lake AQI: 74 Ozone Central Mojave Desert AQI: 71 Ozone Coachella Valley/Low Desert AQI: 80 Ozone Hemet/Elsinore Area AQI: 58 Ozone Northern Mojave Desert AQI: 58 Ozone Riverside Valley AQI: 80 Ozone San Bernardino Mountains AQI: 93 Ozone San Bernardino Valley AQI: 100 Ozone San Fernando/Santa Clarita Valleys AQI: 64 Ozone San Gabriel Mountains AQI: 54 Ozone San Gabriel Valley AQI: 71 Ozone Victor Valley AQI: 54 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Decreasing ventilation in the Basin on Saturday. No precipitation expected. Inversion Base: 1628 FT | Breaking Temperature: 64 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 3401 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: 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 SATURDAY, MAY 30, 2026 IN THE SOUTH COAST AIR BASIN.