TODAY DEC04
TEMPERATURE45
HUMIDITY80
PRESSURE30.06
WIND COND.260 13
  • 4532Sat100%20%
  • 4228Sun
  • 4228Mon
  • 4329Tue
  • 4633Wed
daynightWeather update from Philadelphia, Philadelphia International Airport at

Key findings

  • The highest monthly average temperature in Chester for July is 79 degrees
  • The lowest monthly average temperature in Chester for January is 34 degrees
  • The most monthly precipitation in Chester occurs in August with 5.8 inches
  • The air quality index in Chester is 3% worse than the national average
  • The pollution index in Chester is 57% 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 index514550
      Pollution index2,169,6004,327,9925,066,862

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Woodstown, NJ3,5484020%
      Pennsville, NJ11,4214020%
      Glassboro, NJ19,1954020%
      Richwood, NJ3,4784020%
      Exton, PA4,7994216%
      Chester, PA34,056512%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Houma, LA34,0524118%
      Kyle, TX34,0804412%
      Redan, GA34,100524%
      Dana Point, CA34,0098978%
      Pekin, IL34,0034118%
      Chester, PA34,056512%
      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.