TODAY DEC24
TEMPERATURE31
HUMIDITY56
PRESSURE103250
WIND COND.190 16.6
  • 4432Tue80%
  • 4231
  • 4229Thu
  • 4533Fri
  • 5040Sat30%
daynightWeather update from Washington/Reagan National Airport, DC at
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Weather Quick Facts

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

Compare Arlington, VA Weather

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      Highland Park-Overlee Knolls 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"

      Highland Park-Overlee Knolls 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.
      IndexHighland Park-Overlee KnollsArlingtonVirginia
      Air quality index474758
      Pollution index208,434208,4341,561,881

      Highland Park-Overlee Knolls 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 Highland Park-Overlee Knolls temperature with heat index

      Highland Park-Overlee Knolls monthly precipitation with daily maximum

      Highland Park-Overlee Knolls monthly snow depth with daily maximum

      Highland Park-Overlee Knolls monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Layhill, MD5,112476.0%
      Rockville, MD68,155476.0%
      Accokeek, MD11,590476.0%
      Occoquan, VA1,053476.0%
      Fairfax, VA23,312476.0%
      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 Highland Park-Overlee Knolls, 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.