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Key findings

  • The highest monthly average temperature in Wheaton for August is 73.7 degrees
  • The lowest monthly average temperature in Wheaton for February is 24.4 degrees
  • The most monthly precipitation in Wheaton occurs in August with 8.3 inches
  • The air quality index in Wheaton is 11% worse than the national average
  • The pollution index in Wheaton is 196% worse than the national average

Compare Wheaton, IL Weather

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      Wheaton 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
      January20°F33°F26°F3.6"
      February18°F32°F24°F3.0"
      March30°F49°F39°F3.1"
      April39°F62°F49°F5.2"
      May49°F72°F60°F3.7"
      June60°F83°F72°F4.9"
      July62°F84°F73°F7.8"
      August64°F84°F74°F8.3"
      September56°F80°F68°F2.9"
      October47°F67°F56°F4.3"
      November32°F50°F40°F3.1"
      December18°F32°F25°F2.2"

      Wheaton 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.
      IndexWheatonIllinoisNational
      Air quality index554150
      Pollution index14,981,3003,347,2955,066,862

      Wheaton 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

      Wheaton air quality information

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

      Average monthly Wheaton temperature with heat index

      Wheaton monthly precipitation with daily maximum

      Wheaton monthly snow depth with daily maximum

      Wheaton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Oswego, IL33,2450100%
      Montgomery, IL19,0550100%
      Elgin, IL111,9195510%
      Boulder Hill, IL8,4495510%
      Brookfield, IL18,9665510%
      Wheaton, IL53,5685510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Blue Springs, MO53,641476%
      Euless, TX53,675512%
      Doral, FL53,4264118%
      Ankeny, IA53,4133922%
      Castle Rock, CO53,7895816%
      Wheaton, IL53,5685510%
      Source: The Wheaton, 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.