SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: SAT., JUL. 20, 2019 -------------------------------------------------------------------------------- SRA AREA 1-HR 8-HR 8-HR 24-HR 24-HR 24-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 62 41 0.5 30 16 10 59 2 NW Coastal LA 57 45 0.5 24 12 10 50 3 SW Coastal LA 41 46 0.5 17 9 12 43 4 S Coastal LA 45 36 0.5 16 10 12 42 5 Southeast LA Co 62 48 0.5 17 9 10 44 6 W San Fernando Vly 59 50 0.5 17 12 10 50 7 E San Fernando Vly 58 50 0.5 23 17 12 61 8 W San Gabriel Vly 53 47 0.6 23 14 10 55 9-1 E San Gabriel Vly-1 82 50 0.5 35 15 12 57 9-2 E San Gabriel Vly-2 82 50 0.5 35 15 12 57 10 Pomona Walnut Vly 76 59 0.5 19 11 10 64 11 S San Gabriel Vly 79 60 0.5 18 9 12 67 12 S Central LA Co 44 36 0.5 18 9 16 38 13 Santa Clarita Vly 81 56 0.5 45 10 10 54 15 San Gabriel Mts 66 55 0.5 15 8 10 51 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 57 60 0.5 20 7 10 67 Orange County: South Coast Air Basin 16 N Orange Co 55 48 0.5 22 11 10 46 17-1 Central Orange Co-1 51 43 0.5 23 10 10 42 17-2 Central Orange Co-2 51 43 0.5 23 10 10 42 18 N Coastal Orange Co 43 37 0.5 22 8 10 34 19 Saddleback Vly 60 49 0.5 14 10 10 45 20 Central Coastal 49 42 0.5 19 7 10 39 21 Capistrano Vly 53 45 0.5 14 7 10 42 Riverside County: South Coast Air Basin 22 Norco/Corona 71 61 0.5 29 15 10 71 23 Metro Riverside Co 72 63 0.5 55 16 10 77 24 Perris Vly 72 61 0.5 29 14 10 71 25 Lake Elsinore 88 52 0.5 20 8 10 48 26 Temecula Vly 54 51 0.5 14 13 10 53 27 Anza Vly 57 52 0.5 15 12 10 50 28 Hemet/San Jacinto 66 60 0.5 20 12 10 67 29 Banning 67 60 0.5 31 11 10 67 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- SRA AREA 1-HR 8-HR 8-HR 24-HR 24-HR 24-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 30-1 N Coachella Vly 63 76 0.5 16 10 10 118 30-2 S Coachella Vly 63 65 0.5 21 10 10 84 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 68 59 0.5 51 15 10 64 33 SW San Bernardino Vly 94 58 0.5 29 16 27 61 34-1 C San Bernardino Vly-1 88 75 0.5 25 16 10 115 34-2 C San Bernardino Vly-2 88 76 0.5 25 16 10 118 35 E San Bernardino Vly 78 68 0.5 30 13 10 93 36 W San Bernardino Mtns 76 60 0.5 15 14 10 67 37 C San Bernardino Mtns 73 66 0.5 14 11 10 87 38 Big Bear Lake 69 62 0.5 14 8 10 74 San Bernardino County: Mojave Desert Air Basin 39 Phelan 69 68 0.5 13 11 10 93 40 Hesperia 66 65 0.5 13 11 10 84 41 Trona 59 51 0.5 13 6 10 47 42 Victorville 66 60 0.5 13 10 10 67 43 Yucca Vly 63 56 0.5 13 7 10 54 44 Barstow 70 58 0.5 13 8 10 61 45 Twentynine Palms 85 55 0.5 13 6 10 51 -------------------------------------------------------------------------------- ------------------------------------------------------------------------ AIR QUALITY FORECAST ------------------------------------------------------------------------ ON SAT., JUL. 20, 2019 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: 45 Ozone MODERATE in the following area(s): Metropolitan Area AQI: 59 PM2.5 San Fernando/Santa Clarita Valleys AQI: 61 PM2.5 San Gabriel Valley AQI: 67 Ozone Riverside Valley AQI: 77 Ozone Hemet/Elsinore Area AQI: 71 Ozone Temecula/Anza Area AQI: 53 PM2.5 San Gabriel Mountains AQI: 67 Ozone San Bernardino Mountains AQI: 87 Ozone Big Bear Lake AQI: 74 Ozone Banning Pass Area AQI: 67 Ozone Antelope Valley AQI: 51 Ozone Victor Valley AQI: 93 Ozone Northern Mojave Desert AQI: 61 Ozone Central Mojave Desert AQI: 54 Ozone UNHEALTHY FOR SENSITIVE GROUPS in the following area(s): San Bernardino Valley AQI: 118 Ozone Coachella Valley/Low Desert AQI: 118 Ozone ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Saturday will have vigorous onshore flow and a deepening of the marine layer. This will keep daytime temperatures well below normal. There will be a weak eddy. ------------------------------------------------------------------------ Inversion Base: 2288 FT | Breaking Temperature: 83 DEG F Inversion Breaking: NO | Maximum Mixing HEIGHT: 2757 FT ------------------------------------------------------------------------ ------------------------------------------------------------------------ AGRICULTURAL AND WILDLAND FIRES BURN FORECAST ------------------------------------------------------------------------ Area 40 - South Coast Air Basin: MARGINAL-BURN Burning is prohibited in the following source/receptor areas: 34 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 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, JULY 20, 2019 IN THE SOUTH COAST AIR BASIN.