TODAY DEC22
TEMPERATURE17
HUMIDITY56
PRESSURE103010
WIND COND.330 18.4
  • 2925Mon
  • 3926Tue40%
  • 3826
  • 3928Thu
  • 4232Fri
daynightWeather update from Reading, Reading Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Pennwyn for July is 76.7 degrees
  • The lowest monthly average temperature in Pennwyn for January is 31 degrees
  • The most monthly precipitation in Pennwyn occurs in July with 5 inches
  • The air quality index in Pennwyn is equal to the national average
  • The pollution index in Pennwyn is 307% worse than the national average

Compare Pennwyn, PA Weather

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      Pennwyn 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
      January23°F40°F31°F2.6"
      February23°F42°F32°F2.4"
      March31°F53°F41°F3.1"
      April42°F66°F54°F3.6"
      May51°F75°F63°F3.7"
      June61°F84°F72°F4.8"
      July66°F88°F77°F5.0"
      August64°F85°F74°F4.7"
      September57°F79°F68°F4.4"
      October46°F67°F56°F4.8"
      November35°F55°F45°F2.7"
      December29°F45°F36°F3.8"

      Pennwyn 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.
      IndexPennwynPennsylvaniaNational
      Air quality index424542
      Pollution index11,091,2004,584,8052,726,193

      Pennwyn air quality

      MeasurementTotal
      Days measured365
      Days with good air quality279
      Days with moderate air quality80
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.140%
      Carbon Tetrachloride0.030%
      Lead0.310%
      Mercury0.004%

      Average monthly Pennwyn temperature with heat index

      Pennwyn monthly precipitation with daily maximum

      Pennwyn monthly snow depth with daily maximum

      Pennwyn monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Alsace Manor, PA3354216.0%
      Centerport, PA3124216.0%
      Leesport, PA2,2304216.0%
      Denver, PA3,8474216.0%
      Reamstown, PA3,3384216.0%
      Pennwyn, PA6584216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ona, FL6583628.0%
      Melba, ID6583628.0%
      Marengo, IN658688.0%
      Russell, MA6584020.0%
      Marshall, NC6584412.0%
      Pennwyn, PA6584216.0%
      Source: The Pennwyn, 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.