TODAY MAR29
TEMPERATURE
HUMIDITY66
PRESSURE101800
WIND COND.340 5.4
  • 5839Sat30%
  • 5043Sun30%80%
  • 5240Mon70%
  • 5034Tue
  • 4933Wed
daynightWeather update from Chicago / West Chicago, Dupage Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Glen Ellyn for July is 73.7 degrees
  • The lowest monthly average temperature in Glen Ellyn for January is 23.8 degrees
  • The most monthly precipitation in Glen Ellyn occurs in May with 4.5 inches
  • The air quality index in Glen Ellyn is 31% worse than the national average
  • The pollution index in Glen Ellyn is 450% worse than the national average

Compare Glen Ellyn, IL Weather

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      Glen Ellyn 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
      January16°F32°F24°F1.4"
      February17°F34°F25°F1.2"
      March30°F49°F38°F2.2"
      April39°F62°F50°F3.8"
      May49°F73°F60°F4.5"
      June59°F82°F70°F4.4"
      July63°F85°F74°F4.1"
      August62°F83°F72°F3.8"
      September54°F77°F65°F3.4"
      October43°F64°F53°F3.1"
      November32°F50°F40°F1.9"
      December21°F36°F29°F2.1"

      Glen Ellyn 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.
      IndexGlen EllynIllinoisNational
      Air quality index554142
      Pollution index14,981,3003,148,6942,726,193

      Glen Ellyn air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality121
      Days with moderate air quality227
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality1

      Glen Ellyn air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.140%
      Carbon Tetrachloride0.030%
      Lead0.020%
      Mercury0.010%

      Average monthly Glen Ellyn temperature with heat index

      Glen Ellyn monthly precipitation with daily maximum

      Glen Ellyn monthly snow depth with daily maximum

      Glen Ellyn monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Oswego, IL35,4700100.0%
      Carol Stream, IL39,4475510.0%
      Des Plaines, IL58,3165510.0%
      Northlake, IL12,2355510.0%
      Clarendon Hills, IL8,8345510.0%
      Glen Ellyn, IL27,7415510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Rockledge, FL27,7393628.0%
      Marion, IN27,7303726.0%
      Kirkwood, MO27,772548.0%
      Frankfort, KY27,7054216.0%
      Perry Hall, MD27,778468.0%
      Glen Ellyn, IL27,7415510.0%
      Source: The Glen Ellyn, IL 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.