TODAY AUG07
TEMPERATURE75
HUMIDITY84
PRESSURE30.1
WIND COND.140 9.4
  • 8767Sat20%
  • 9069Sun
  • 9271Mon
  • 9371Tue50%50%
  • 9171Wed60%60%
daynightWeather update from Washington/Dulles International Airport, DC at

Key findings

  • The highest monthly average temperature in Ashburn for July is 78 degrees
  • The lowest monthly average temperature in Ashburn for January is 34 degrees
  • The most monthly precipitation in Ashburn occurs in May with 5.6 inches
  • The air quality index in Ashburn is 5% better than the national average
  • The pollution index in Ashburn is 92% better than the national average

Compare Ashburn, VA Weather

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      Ashburn Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January24°F46°F34°F2.7"
      February25°F48°F36°F2.1"
      March33°F58°F45°F3.2"
      April43°F71°F56°F3.7"
      May52°F78°F65°F5.6"
      June61°F86°F74°F4.5"
      July66°F90°F78°F4.2"
      August65°F88°F76°F2.8"
      September58°F82°F69°F3.5"
      October46°F71°F58°F5.4"
      November35°F59°F46°F2.6"
      December29°F50°F39°F3.8"

      Ashburn air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexAshburnVirginiaNational
      Air quality index475850
      Pollution index380,1241,533,7925,066,862

      Ashburn air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality209
      Days with moderate air quality145
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality1

      Ashburn air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.005%
      Carbon Tetrachloride0.001%
      Lead0.001%
      Mercury0.000%

      Average monthly Ashburn temperature with heat index

      Ashburn monthly precipitation with daily maximum

      Ashburn monthly snow depth with daily maximum

      Ashburn monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Middleburg, VA6563824%
      Woodburn, VA8,6773824%
      Hillsboro, VA983824%
      Purcellville, VA8,9143824%
      Bull Run Mountain Estates, VA1,3593824%
      Ashburn, VA49,692476%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Poway, CA49,6756428%
      Wheaton, MD49,764476%
      Olympia, WA49,6083040%
      Cerritos, CA49,7977244%
      Bonita Springs, FL49,8073432%
      Ashburn, VA49,692476%
      Source: The Ashburn, VA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.