TODAY FEB26
TEMPERATURE20
HUMIDITY88
PRESSURE30.26
WIND COND.
  • 4335Fri70%
  • 5035Sat
  • 4824Sun
  • 3823Mon
  • 4932Tue
daynightWeather update from Chicago / West Chicago, Dupage Airport at

Key findings

  • The highest monthly average temperature in Glen Ellyn for July is 74 degrees
  • The lowest monthly average temperature in Glen Ellyn for January is 24 degrees
  • The most monthly precipitation in Glen Ellyn occurs in May with 4.5 inches
  • The air quality index in Glen Ellyn is 11% worse than the national average
  • The pollution index in Glen Ellyn is 196% 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 index554150
      Pollution index14,981,3003,347,2955,066,862

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Oswego, IL33,2450100%
      Park Ridge, IL37,5675510%
      Summit, IL11,4095510%
      Aurora, IL200,9075510%
      North Aurora, IL17,6125510%
      Glen Ellyn, IL27,8945510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Dodge City, KS27,8751570%
      Chamblee, GA27,862524%
      Fredericksburg, VA27,853476%
      Round Lake Beach, IL27,9363922%
      French Valley, CA27,9498978%
      Glen Ellyn, IL27,8945510%
      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.