TODAY MAR28
TEMPERATURE51
HUMIDITY83
PRESSURE101460
WIND COND.350 25.9
  • 5637Fri
  • 5944Sat30%
  • 6344Sun
  • 5444Mon50%60%
  • 5744Tue80%60%
daynightWeather update from Philadelphia, Philadelphia International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Chester for July is 79.2 degrees
  • The lowest monthly average temperature in Chester for January is 34.4 degrees
  • The most monthly precipitation in Chester occurs in August with 5.8 inches
  • The air quality index in Chester is 21% worse than the national average
  • The pollution index in Chester is 20% better than the national average

Compare Chester, PA 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
      January26°F44°F34°F3.3"
      February26°F46°F35°F2.6"
      March33°F56°F44°F3.6"
      April44°F68°F56°F4.0"
      May54°F77°F65°F3.9"
      June64°F86°F74°F4.8"
      July70°F90°F79°F5.0"
      August68°F87°F77°F5.8"
      September61°F82°F71°F4.3"
      October50°F70°F59°F4.7"
      November39°F59°F48°F2.8"
      December31°F49°F40°F4.7"

      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.
      IndexChesterPennsylvaniaNational
      Air quality index514542
      Pollution index2,169,6004,584,8052,726,193

      Chester air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality180
      Days with moderate air quality169
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality0

      Chester air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.004%

      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.
      Richwood, NJ3,9674020.0%
      Woodstown, NJ3,4454020.0%
      Pennsville, NJ11,9684020.0%
      Glassboro, NJ20,0694020.0%
      Eagleview, PA1,8804216.0%
      Chester, PA33,855512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Glendale Heights, IL33,8635510.0%
      Cottonwood Heights, UT33,865512.0%
      Golden Glades, FL33,8434118.0%
      LaSalle, ON33,838n/a 
      San Luis, AZ33,8754510.0%
      Chester, PA33,855512.0%
      Source: The Chester, PA 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.