SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT DAILY AIR QUALITY FORECAST VALID: WED., JAN. 20, 2021 -------------------------------------------------------------------------------- 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 45 34 0.7 23 15 36 57 2 NW Coastal LA 46 38 0.6 21 11 23 46 3 SW Coastal LA 37 28 0.4 22 17 31 61 4 S Coastal LA 36 28 0.7 25 19 45 66 5 Southeast LA Co 35 28 1.1 26 14 38 55 6 W San Fernando Vly 52 44 0.7 17 7 24 41 7 E San Fernando Vly 45 39 0.6 22 8 38 36 8 W San Gabriel Vly 48 39 0.4 22 11 40 46 9 E San Gabriel Vly 49 42 0.4 17 11 25 46 10 Pomona Walnut Vly 48 39 0.5 26 9 38 38 11 S San Gabriel Vly 38 30 1.1 25 12 29 50 12 S Central LA Co 33 26 1.1 26 20 31 68 13 Santa Clarita Vly 41 40 0.2 16 4 22 37 15 San Gabriel Mts 44 40 0.7 22 8 35 37 Los Angeles County: Mojave Desert Air Basin 14 Antelope Vly 34 29 1.0 13 8 28 33 Orange County: South Coast Air Basin 16 N Orange Co 47 38 0.5 27 10 21 42 17 Central Orange Co 36 29 0.2 27 9 47 44 18 N Coastal Orange Co 23 20 0.6 24 14 42 55 19 Saddleback Vly 46 41 0.3 26 10 36 42 20 Central Coastal 40 36 0.3 20 10 31 42 21 Capistrano Vly 41 38 0.3 15 8 22 35 Riverside County: South Coast Air Basin 22 Norco/Corona 42 37 0.4 31 11 29 46 23 Metro Riverside Co 46 39 0.6 33 12 33 50 24 Perris Vly 44 37 0.4 19 5 27 34 25 Lake Elsinore 43 40 0.3 11 1 16 37 26 Temecula Vly 42 41 0.3 13 6 16 38 27 Anza Vly 38 36 0.2 15 7 16 33 28 Hemet/San Jacinto 40 38 0.3 15 6 21 35 29 Banning 43 41 0.3 13 7 13 38 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 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 41 37 0.2 18 13 18 53 Riverside County: Mojave Desert Air Basin 31 E Riverside Co 35 34 0.2 12 6 15 31 San Bernardino County: South Coast Air Basin 32 NW San Bernardino Vly 49 41 0.4 26 8 27 38 33 SW San Bernardino Vly 46 39 0.5 31 9 35 38 34 C San Bernardino Vly 47 44 0.3 18 6 24 41 35 E San Bernardino Vly 44 42 0.5 19 6 30 39 36 W San Bernardino Mtns 46 40 0.3 22 8 25 37 37 C San Bernardino Mtns 43 41 0.3 17 5 27 38 38 Big Bear Lake 40 38 0.3 15 7 24 35 San Bernardino County: Mojave Desert Air Basin 39 Phelan 41 38 0.5 19 11 29 46 40 Hesperia 36 33 0.4 16 9 29 38 41 Trona 31 25 0.6 12 7 17 29 42 Victorville 38 34 0.4 19 13 30 53 43 Yucca Vly 41 39 0.2 14 8 22 36 44 Barstow 37 32 0.3 16 10 35 42 45 Twentynine Palms 39 35 0.2 12 7 21 32 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- AIR QUALITY FORECAST -------------------------------------------------------------------------------- ON WED., JAN. 20, 2021, THE SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT PREDICTS THE AIR QUALITY WILL BE ... GOOD in the following area(s): Antelope Valley AQI: 33 PM2.5 Banning Pass Area AQI: 38 Ozone Big Bear Lake AQI: 35 Ozone Central Mojave Desert AQI: 36 Ozone Hemet/Elsinore Area AQI: 37 Ozone Inland Orange County AQI: 44 NO2 Northern Mojave Desert AQI: 42 PM2.5 Riverside Valley AQI: 50 PM2.5 San Bernardino Mountains AQI: 38 Ozone San Bernardino Valley AQI: 41 Ozone San Fernando/Santa Clarita Valleys AQI: 41 Ozone San Gabriel Mountains AQI: 37 Ozone San Gabriel Valley AQI: 50 PM2.5 Temecula/Anza Area AQI: 38 Ozone MODERATE in the following area(s): Coachella Valley/Low Desert AQI: 53 PM2.5 Coastal Area AQI: 66 PM2.5 Metropolitan Area AQI: 68 PM2.5 Victor Valley AQI: 53 PM2.5 ------------------------------------------------------------------------ ------------------------------------------------------------------------ WEATHER FORECAST ------------------------------------------------------------------------ Wednesday will have offshore flow with advisory level gusts. It will be 4-8 degrees warmer. There is a chance of showers in the Coachella Valley Inversion Base: 486 FT | Breaking Temperature: 59 DEG F Inversion Breaking: YES | Maximum Mixing HEIGHT: 7653 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 WEDNESDAY, JANUARY 20, 2021 IN THE SOUTH COAST AIR BASIN.