TODAY DEC27
TEMPERATURE37
HUMIDITY70
PRESSURE102980
WIND COND.
  • 4235Fri40%
  • 5248Sat90%80%
  • 6047Sun90%90%
  • 5537Mon60%
  • 5140Tue70%
daynightWeather update from Carroll County Regional Jack B Poage Field at
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Weather Quick Facts

  • The highest monthly average temperature in Westminster for July is 74.8 degrees
  • The lowest monthly average temperature in Westminster for January is 30.8 degrees
  • The most monthly precipitation in Westminster occurs in September with 5.1 inches
  • The air quality index in Westminster is equal to the national average
  • The pollution index in Westminster is 104% worse than the national average

Compare Westminster, MD Weather

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      Westminster 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
      January21°F41°F31°F2.3"
      February21°F42°F31°F2.6"
      March30°F54°F41°F3.0"
      April40°F66°F53°F3.5"
      May50°F75°F62°F4.2"
      June60°F82°F71°F3.7"
      July63°F86°F75°F4.6"
      August61°F84°F72°F4.7"
      September54°F78°F65°F5.1"
      October44°F67°F55°F4.8"
      November33°F56°F44°F2.7"
      December27°F46°F36°F3.3"

      Westminster 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.
      IndexWestminsterMarylandNational
      Air quality index424342
      Pollution index5,553,8705,342,3672,726,193

      Westminster air quality

      MeasurementTotal
      Days measured365
      Days with good air quality288
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.004%
      Benzene0.070%
      Carbon Tetrachloride0.010%
      Lead0.410%
      Mercury0.070%

      Average monthly Westminster temperature with heat index

      Westminster monthly precipitation with daily maximum

      Westminster monthly snow depth with daily maximum

      Westminster monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      New Market, MD1,5274020.0%
      Glen Rock, PA2,3324118.0%
      Taneytown, MD6,8374216.0%
      Parkville, PA7,3454216.0%
      Libertytown, MD8314216.0%
      Westminster, MD18,6494216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Central Point, OR18,6483628.0%
      Deux-Montagnes, QC18,650n/a 
      Homewood, IL18,6565510.0%
      Petawawa, ON18,660n/a 
      Cedar Mill, OR18,6613824.0%
      Westminster, MD18,6494216.0%
      Source: The Westminster, 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.