TODAY NOV24
TEMPERATURE44
HUMIDITY65
PRESSURE101360
WIND COND.
  • 5837Sun
  • 5948Mon
  • 6237Tue50%
  • 5242Wed
  • 523880%70%
daynightWeather update from Fort Belvoir at
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Weather Quick Facts

  • The highest monthly average temperature in South Run for July is 78.1 degrees
  • The lowest monthly average temperature in South Run for January is 35 degrees
  • The most monthly precipitation in South Run occurs in September with 11.4 inches
  • The air quality index in South Run is 12% worse than the national average
  • The pollution index in South Run is 86% better than the national average

Compare South Run, VA Weather

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      South Run 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
      January26°F45°F35°F4.6"
      February27°F48°F37°F4.1"
      March36°F59°F47°F5.4"
      April45°F70°F57°F6.6"
      May54°F77°F66°F7.2"
      June63°F86°F74°F10.2"
      July67°F89°F78°F8.7"
      August66°F87°F76°F7.4"
      September59°F81°F69°F11.4"
      October48°F70°F58°F8.8"
      November37°F59°F47°F5.7"
      December31°F50°F40°F5.9"

      South Run 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.
      IndexSouth RunVirginiaNational
      Air quality index475842
      Pollution index380,1241,561,8812,726,193

      South Run 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 South Run temperature with heat index

      South Run monthly precipitation with daily maximum

      South Run monthly snow depth with daily maximum

      South Run monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bensville, MD13,658476.0%
      Potomac Heights, MD1,247476.0%
      Dumfries, VA5,559476.0%
      Mason Neck, VA1,938476.0%
      Triangle, VA10,526476.0%
      South Run, VA6,760476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Inniswold, LA6,7604510.0%
      Parkwood, WA6,7581864.0%
      Loughman, FL6,7623922.0%
      La Follette, TN6,7623922.0%
      Allendale, NJ6,757512.0%
      South Run, VA6,760476.0%
      Source: The South Run, 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.