TODAY DEC22
TEMPERATURE27
HUMIDITY53
PRESSURE103350
WIND COND.330 16.6
  • 3531Mon
  • 4332Tue30%
  • 4332
  • 4435Thu
  • 4738Fri30%
daynightWeather update from Annapolis, United States Naval Academy at
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Weather Quick Facts

  • The highest monthly average temperature in Chester for July is 79 degrees
  • The lowest monthly average temperature in Chester for January is 35.8 degrees
  • The most monthly precipitation in Chester occurs in October with 5 inches
  • The air quality index in Chester is 9% worse than the national average
  • The pollution index in Chester is 28% worse than the national average

Compare Chester, MD Weather

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      Chester 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
      January30°F43°F36°F2.2"
      February32°F45°F37°F2.2"
      March39°F54°F45°F3.0"
      April49°F65°F56°F3.1"
      May59°F73°F65°F3.5"
      June69°F82°F75°F4.3"
      July73°F85°F79°F4.8"
      August71°F83°F77°F4.2"
      September66°F78°F72°F3.3"
      October54°F67°F60°F5.0"
      November43°F56°F49°F2.0"
      December36°F47°F41°F3.4"

      Chester 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.
      IndexChesterMarylandNational
      Air quality index464342
      Pollution index3,494,0105,342,3672,726,193

      Chester 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 Chester temperature with heat index

      Chester monthly precipitation with daily maximum

      Chester monthly snow depth with daily maximum

      Chester monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Grasonville, MD3,5784118.0%
      Queenstown, MD9504118.0%
      Easton, MD16,5894118.0%
      St. Michaels, MD1,3114118.0%
      Centreville, MD4,8294216.0%
      Chester, MD4,319468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Cornwall, PA4,3194216.0%
      French Island, WI4,3183530.0%
      Grantley, PA4,3204118.0%
      Riva, MD4,321476.0%
      Barrow, AK4,3163824.0%
      Chester, MD4,319468.0%
      Source: The Chester, 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.