SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: MON., JUL. 13, 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 61 51 0.7 22 10 24 53 2 NW Coastal LA 45 40 0.3 23 8 15 44 3 SW Coastal LA 38 33 0.1 24 8 9 44 4 S Coastal LA 52 43 0.2 28 8 23 44 5 Southeast LA Co 61 49 0.5 30 10 20 53 6 W San Fernando Vly 61 57 0.3 23 7 13 58 7 E San Fernando Vly 65 57 0.5 24 10 20 58 8 W San Gabriel Vly 72 58 0.3 28 13 17 61 9 E San Gabriel Vly 86 71 0.5 35 12 21 101 10 Pomona Walnut Vly 82 67 0.4 42 12 21 90 11 S San Gabriel Vly 69 54 0.3 32 11 19 55 12 S Central LA Co 54 45 0.2 25 10 14 53 13 Santa Clarita Vly 76 66 0.2 25 10 20 87 15 San Gabriel Mts 72 64 0.4 39 12 22 80 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 63 58 0.3 30 12 21 61 Orange County: South Coast Air Basin 16 N Orange Co 69 53 0.1 38 10 13 53 17 Central Orange Co 60 48 0.3 30 9 11 50 18 N Coastal Orange Co 48 38 0.3 28 5 20 35 19 Saddleback Vly 58 51 0.2 37 5 15 47 20 Central Coastal 54 44 0.2 27 5 15 41 21 Capistrano Vly 57 51 0.3 28 6 14 47 Riverside County: South Coast Air Basin 22 Norco/Corona 78 68 0.4 48 11 15 93 23 Metro Riverside Co 81 74 0.5 51 14 16 112 24 Perris Vly 70 69 0.4 34 11 25 97 25 Lake Elsinore 72 65 0.3 23 10 14 84 26 Temecula Vly 51 49 0.2 35 10 14 53 27 Anza Vly 54 52 0.2 39 8 15 48 28 Hemet/San Jacinto 65 61 0.3 32 10 27 71 29 Banning 78 68 0.3 29 7 26 93 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 64 56 0.2 47 13 16 58 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 48 41 0.2 33 8 13 44 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 79 66 0.4 44 12 22 87 33 SW San Bernardino Vly 81 66 0.4 48 13 26 87 34 C San Bernardino Vly 85 72 0.3 30 12 31 105 35 E San Bernardino Vly 84 73 0.5 36 10 28 108 36 W San Bernardino Mtns 79 68 0.3 39 12 28 93 37 C San Bernardino Mtns 89 82 0.3 32 9 31 140 38 Big Bear Lake 58 54 0.3 32 6 29 50 San Bernardino County: Mojave Desert Air Basin 39 Phelan 58 56 0.3 32 7 31 54 40 Hesperia 65 62 0.3 28 8 33 74 41 Trona 59 54 0.2 33 7 10 50 42 Victorville 65 63 0.3 30 8 33 77 43 Yucca Vly 61 53 0.2 33 8 24 49 44 Barstow 67 60 0.2 33 8 44 67 45 Twentynine Palms 48 43 0.2 33 8 21 44 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON MON., JUL. 13, 2026, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Big Bear Lake AQI: 50 Ozone Central Mojave Desert AQI: 49 Ozone Coastal Area AQI: 44 PM2.5 Inland Orange County AQI: 50 PM2.5 MODERATE in the following area(s): Antelope Valley AQI: 61 Ozone Banning Pass Area AQI: 93 Ozone Coachella Valley/Low Desert AQI: 58 PM2.5 Hemet/Elsinore Area AQI: 97 Ozone Metropolitan Area AQI: 53 PM2.5 Northern Mojave Desert AQI: 67 Ozone San Fernando/Santa Clarita Valleys AQI: 87 Ozone San Gabriel Mountains AQI: 80 Ozone Temecula/Anza Area AQI: 53 PM2.5 Victor Valley AQI: 77 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): Riverside Valley AQI: 112 Ozone San Bernardino Mountains AQI: 140 Ozone San Bernardino Valley AQI: 108 Ozone San Gabriel Valley AQI: 101 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ There is a chance of shower and thunderstorm over the mountains and locally into the deserts each efternoon. Temperatures will increase each day into mid-week. Inversion Base: 1572 FT | Breaking Temperature: 84 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 2215 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AIR QUALITY FORECAST RULE IMPLICATIONS ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 9, 23, 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 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 MONDAY, JULY 13, 2026 IN THE SOUTH COAST AIR BASIN.