SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SUN., JUL. 19, 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 59 50 0.5 30 13 17 58 2 NW Coastal LA 42 37 0.3 30 10 8 53 3 SW Coastal LA 38 32 0.2 35 9 8 50 4 S Coastal LA 42 37 0.2 43 10 13 53 5 Southeast LA Co 52 46 0.4 44 12 20 56 6 W San Fernando Vly 61 56 0.3 29 10 10 54 7 E San Fernando Vly 63 57 0.4 30 12 14 58 8 W San Gabriel Vly 68 58 0.3 34 13 11 61 9 E San Gabriel Vly 74 66 0.4 35 12 17 87 10 Pomona Walnut Vly 67 60 0.4 46 13 18 67 11 S San Gabriel Vly 61 53 0.4 44 13 20 58 12 S Central LA Co 46 40 0.3 37 11 13 55 13 Santa Clarita Vly 74 63 0.3 29 12 12 77 15 San Gabriel Mts 68 62 0.4 38 13 19 74 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 66 63 0.3 29 13 9 77 Orange County: South Coast Air Basin 16 N Orange Co 53 49 0.2 48 13 11 58 17 Central Orange Co 45 42 0.3 48 14 10 60 18 N Coastal Orange Co 44 40 0.2 43 10 12 53 19 Saddleback Vly 52 47 0.2 47 10 11 53 20 Central Coastal 50 45 0.2 41 10 10 53 21 Capistrano Vly 49 44 0.3 37 9 9 50 Riverside County: South Coast Air Basin 22 Norco/Corona 59 55 0.4 51 13 12 58 23 Metro Riverside Co 65 62 0.5 54 13 14 74 24 Perris Vly 63 59 0.4 43 11 19 64 25 Lake Elsinore 53 49 0.3 34 12 9 56 26 Temecula Vly 45 42 0.3 39 11 9 55 27 Anza Vly 49 45 0.2 42 7 9 42 28 Hemet/San Jacinto 55 51 0.3 41 9 20 50 29 Banning 62 59 0.3 38 9 16 64 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 66 59 0.2 47 11 9 64 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 47 45 0.2 36 9 9 50 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 73 66 0.6 41 14 17 87 33 SW San Bernardino Vly 65 60 0.5 51 14 21 67 34 C San Bernardino Vly 78 69 0.4 47 11 25 97 35 E San Bernardino Vly 72 69 0.4 44 10 23 97 36 W San Bernardino Mtns 75 67 0.4 39 12 29 90 37 C San Bernardino Mtns 74 71 0.3 44 7 33 101 38 Big Bear Lake 64 60 0.3 41 7 23 67 San Bernardino County: Mojave Desert Air Basin 39 Phelan 68 62 0.3 32 9 36 74 40 Hesperia 63 61 0.3 30 9 40 71 41 Trona 56 51 0.2 31 8 18 47 42 Victorville 68 65 0.3 31 10 42 84 43 Yucca Vly 58 55 0.2 33 9 16 51 44 Barstow 63 60 0.3 29 9 32 67 45 Twentynine Palms 53 51 0.2 34 10 14 53 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON SUN., JUL. 19, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... MODERATE in the following area(s): Antelope Valley AQI: 77 Ozone Banning Pass Area AQI: 64 Ozone Big Bear Lake AQI: 67 Ozone Central Mojave Desert AQI: 53 PM2.5 Coachella Valley/Low Desert AQI: 64 Ozone Coastal Area AQI: 53 PM2.5 Hemet/Elsinore Area AQI: 64 Ozone Inland Orange County AQI: 60 PM2.5 Metropolitan Area AQI: 58 PM2.5 Northern Mojave Desert AQI: 67 Ozone Riverside Valley AQI: 74 Ozone San Bernardino Valley AQI: 97 Ozone San Fernando/Santa Clarita Valleys AQI: 77 Ozone San Gabriel Mountains AQI: 74 Ozone San Gabriel Valley AQI: 87 Ozone Temecula/Anza Area AQI: 55 PM2.5 Victor Valley AQI: 84 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): San Bernardino Mountains AQI: 101 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Mostly sunny skies with cooler temperatures are expected. Inversion Base: 2303 FT | Breaking Temperature: 88 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2494 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 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 SUNDAY, JULY 19, 2026 IN THE SOUTH COAST AIR BASIN.