TODAY OCT10
TEMPERATURE58
HUMIDITY53
PRESSURE102130
WIND COND.340 13
  • 6748Fri
  • 7654Sat
  • 7655Sun30%
  • 6344
  • 5641Tue
daynightWeather update from Washington/Reagan National Airport, DC at
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Weather Quick Facts

  • The highest monthly average temperature in Old Diminion for July is 80.8 degrees
  • The lowest monthly average temperature in Old Diminion for January is 37.1 degrees
  • The most monthly precipitation in Old Diminion occurs in June with 5.3 inches
  • The air quality index in Old Diminion is 12% worse than the national average
  • The pollution index in Old Diminion is 92% better than the national average

Compare Arlington, VA Weather

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      Old Diminion 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
      January28°F47°F37°F2.7"
      February29°F50°F38°F2.3"
      March37°F60°F47°F3.2"
      April47°F71°F58°F3.4"
      May56°F78°F67°F4.6"
      June67°F87°F77°F5.3"
      July72°F91°F81°F4.2"
      August70°F90°F79°F3.2"
      September63°F83°F72°F3.5"
      October52°F72°F61°F5.0"
      November40°F61°F50°F2.5"
      December33°F52°F42°F3.8"

      Old Diminion 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.
      IndexOld DiminionArlingtonVirginia
      Air quality index474758
      Pollution index208,434208,4341,561,881

      Old Diminion 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%
      Benzene0.002%
      Carbon Tetrachloride0.001%
      Lead0.001%
      Mercury0.000%

      Average monthly Old Diminion temperature with heat index

      Old Diminion monthly precipitation with daily maximum

      Old Diminion monthly snow depth with daily maximum

      Old Diminion monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Calverton, MD17,034476.0%
      West Laurel, MD4,171476.0%
      Camp Springs, MD21,829476.0%
      Friendly, MD9,984476.0%
      National Harbor, MD3,998476.0%
      Arlington, VA236,434476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fremont, CA234,8294314.0%
      Garland, TX238,622512.0%
      Hialeah, FL233,8764118.0%
      Irving, TX240,475512.0%
      Regina, SK241,465n/a 
      Arlington, VA236,434476.0%
      Source: The Old Diminion, Arlington, 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.