TODAY NOV21
TEMPERATURE41
HUMIDITY100
PRESSURE100310
WIND COND.320 18.4
  • 3932Fri70%50%
  • 4936Sat
  • 4933Sun
  • 5541Mon
  • 5432Tue
daynightWeather update from Chester County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Atglen for August is 74.5 degrees
  • The lowest monthly average temperature in Atglen for February is 28.4 degrees
  • The most monthly precipitation in Atglen occurs in July with 11.6 inches
  • The air quality index in Atglen is 7% worse than the national average
  • The pollution index in Atglen is 3% better than the national average

Compare Atglen, PA Weather

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      Atglen 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°F40°F32°F4.1"
      February19°F38°F28°F2.9"
      March29°F49°F39°F4.6"
      April40°F63°F51°F6.6"
      May47°F74°F61°F2.5"
      June61°F84°F72°F9.0"
      July64°F84°F74°F11.6"
      August65°F84°F74°F4.1"
      September57°F81°F69°F2.3"
      October50°F69°F58°F8.8"
      November34°F55°F44°F3.7"
      December25°F40°F33°F5.2"

      Atglen 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.
      IndexAtglenPennsylvaniaNational
      Air quality index454542
      Pollution index2,654,1904,584,8052,726,193

      Atglen air quality

      MeasurementTotal
      Days measured365
      Days with good air quality238
      Days with moderate air quality117
      Days w/ poor A.Q. for sensitive groups9
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.000%
      Mercury0.005%

      Average monthly Atglen temperature with heat index

      Atglen monthly precipitation with daily maximum

      Atglen monthly snow depth with daily maximum

      Atglen monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Downingtown, PA8,0124216.0%
      Churchtown, PA4674216.0%
      Modena, PA6554216.0%
      Elverson, PA1,3694216.0%
      Goodville, PA3344216.0%
      Atglen, PA1,1604510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Mount Ida, AR1,1603824.0%
      Third Lake, IL1,1603922.0%
      Mahnomen, MN1,1603334.0%
      Avonmore, PA1,1603824.0%
      Fairhope, PA1,1603628.0%
      Atglen, PA1,1604510.0%
      Source: The Atglen, 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.