TODAY DEC22
TEMPERATURE27
HUMIDITY50
PRESSURE102880
WIND COND.300 13
  • 3112Sun
  • 3526Mon
  • 4429Tue30%
  • 4229
  • 4431Thu
daynightWeather update from Washington/Dulles International Airport, DC at
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Weather Quick Facts

  • The highest monthly average temperature in Countryside for July is 77.7 degrees
  • The lowest monthly average temperature in Countryside for January is 34.4 degrees
  • The most monthly precipitation in Countryside occurs in May with 5.6 inches
  • The air quality index in Countryside is 12% worse than the national average
  • The pollution index in Countryside is 86% better than the national average

Compare Countryside, VA Weather

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      Countryside 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"

      Countryside 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.
      IndexCountrysideVirginiaNational
      Air quality index475842
      Pollution index380,1241,561,8812,726,193

      Countryside air quality

      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

      Air quality details

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

      Average monthly Countryside temperature with heat index

      Countryside monthly precipitation with daily maximum

      Countryside monthly snow depth with daily maximum

      Countryside monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Hamilton, VA7083824.0%
      Bull Run Mountain Estates, VA1,7773824.0%
      Woodburn, VA10,0813824.0%
      Dulles Town Center, VA5,362476.0%
      Centreville, VA74,230476.0%
      Countryside, VA9,517476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Cross Lanes, WV9,5174020.0%
      La Plata, MD9,516476.0%
      Midland, WA9,5183040.0%
      Cedar Hills, OR9,5143824.0%
      Independent Hill, VA9,514476.0%
      Countryside, VA9,517476.0%
      Source: The Countryside, 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.