TODAY NOV21
TEMPERATURE46
HUMIDITY60
PRESSURE100240
WIND COND.280 11.2
  • 4236Fri50%50%
  • 5441Sat
  • 5637Sun
  • 6046Mon
  • 5936Tue30%
daynightWeather update from Annapolis, United States Naval Academy at
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Weather Quick Facts

  • The highest monthly average temperature in Crownsville for July is 78.4 degrees
  • The lowest monthly average temperature in Crownsville for January is 35.9 degrees
  • The most monthly precipitation in Crownsville occurs in August with 7.1 inches
  • The air quality index in Crownsville is 9% worse than the national average
  • The pollution index in Crownsville is 28% worse than the national average

Compare Crownsville, MD Weather

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      Crownsville 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
      January29°F44°F36°F4.8"
      February29°F45°F36°F3.9"
      March36°F54°F44°F5.5"
      April47°F66°F55°F5.8"
      May56°F73°F64°F6.3"
      June67°F83°F74°F6.4"
      July71°F86°F78°F6.7"
      August70°F84°F77°F7.1"
      September65°F80°F72°F5.9"
      October53°F69°F61°F6.4"
      November42°F58°F49°F5.2"
      December33°F48°F40°F5.9"

      Crownsville 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.
      IndexCrownsvilleMarylandNational
      Air quality index464342
      Pollution index3,494,0105,342,3672,726,193

      Crownsville air quality

      MeasurementTotal
      Days measured365
      Days with good air quality223
      Days with moderate air quality129
      Days w/ poor A.Q. for sensitive groups13
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.040%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.001%

      Average monthly Crownsville temperature with heat index

      Crownsville monthly precipitation with daily maximum

      Crownsville monthly snow depth with daily maximum

      Crownsville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Arden on the Severn, MD1,457468.0%
      Fairwood, MD6,780468.0%
      Lake Shore, MD18,523468.0%
      Odenton, MD42,258468.0%
      Columbia, MD105,412468.0%
      Crownsville, MD1,473468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Belle Plaine, KS1,4734020.0%
      Banner Elk, NC1,4732648.0%
      Pennsboro, WV1,4733530.0%
      Lebec, CA1,4746734.0%
      Belleair Beach, FL1,4724314.0%
      Crownsville, MD1,473468.0%
      Source: The Crownsville, 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.