TODAY NOV21
TEMPERATURE45
HUMIDITY60
PRESSURE100540
WIND COND.290 16.6
  • 4338Fri60%70%
  • 5342Sat
  • 5537Sun
  • 5949Mon
  • 5738Tue
daynightWeather update from Washington/Reagan National Airport, DC at
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Weather Quick Facts

  • The highest monthly average temperature in Dover Crystal for July is 80.8 degrees
  • The lowest monthly average temperature in Dover Crystal for January is 37.1 degrees
  • The most monthly precipitation in Dover Crystal occurs in June with 5.3 inches
  • The air quality index in Dover Crystal is 12% worse than the national average
  • The pollution index in Dover Crystal is 42% better than the national average

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      Dover Crystal 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"

      Dover Crystal 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.
      IndexDover CrystalArlingtonVirginia
      Air quality index474758
      Pollution index1,590,970208,4341,561,881

      Dover Crystal 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 Dover Crystal temperature with heat index

      Dover Crystal monthly precipitation with daily maximum

      Dover Crystal monthly snow depth with daily maximum

      Dover Crystal monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Beltsville, MD17,922476.0%
      Laurel, MD25,734476.0%
      Glenarden, MD6,158476.0%
      Rosaryville, MD11,344476.0%
      Forest Heights, MD2,739476.0%
      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 Dover Crystal, 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.