TODAY NOV08
TEMPERATURE67
HUMIDITY61
PRESSURE101970
WIND COND.340 18.4
  • 7242Fri
  • 5738Sat
  • 5650Sun20%90%
  • 694660%
  • 5840Tue
daynightWeather update from Washington/Dulles International Airport, DC at
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Weather Quick Facts

  • The highest monthly average temperature in North Potomac for July is 75.6 degrees
  • The lowest monthly average temperature in North Potomac for January is 31.4 degrees
  • The most monthly precipitation in North Potomac occurs in October with 9.4 inches
  • The air quality index in North Potomac is 12% worse than the national average
  • The pollution index in North Potomac is 439% worse than the national average

Compare North Potomac, MD Weather

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      North Potomac 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°F41°F31°F4.1"
      February26°F44°F34°F5.6"
      March34°F55°F43°F6.4"
      April44°F68°F55°F6.1"
      May55°F76°F64°F9.2"
      June63°F84°F72°F6.0"
      July66°F87°F76°F5.5"
      August64°F85°F73°F7.7"
      September58°F79°F67°F7.6"
      October46°F67°F55°F9.4"
      November36°F55°F44°F5.4"
      December30°F46°F37°F6.8"

      North Potomac 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.
      IndexNorth PotomacMarylandNational
      Air quality index474342
      Pollution index14,693,9005,342,3672,726,193

      North Potomac 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
      Arsenic0.190%
      Benzene0.210%
      Carbon Tetrachloride0.060%
      Lead0.060%
      Mercury0.010%

      Average monthly North Potomac temperature with heat index

      North Potomac monthly precipitation with daily maximum

      North Potomac monthly snow depth with daily maximum

      North Potomac monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Adamstown, MD2,1304020.0%
      South Riding, VA32,526476.0%
      Gaithersburg, MD67,878476.0%
      Olney, MD35,350476.0%
      Bethesda, MD65,092476.0%
      North Potomac, MD24,146476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fort Dodge, IA24,1683726.0%
      Somerset, NJ24,1194118.0%
      Peekskill, NY24,1113628.0%
      Ridgeland, MS24,1944412.0%
      Brandon, MS24,0884412.0%
      North Potomac, MD24,146476.0%
      Source: The North Potomac, MD 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.