TODAY FEB28
TEMPERATURE43
HUMIDITY97
PRESSURE29.73
WIND COND.200 9.4
  • 3722Mon
  • 4832Tue
  • 5232Wed
  • 5432Thu
  • 4428Fri
daynightWeather update from Chicago, Chicago Midway Airport at

Key findings

  • The highest monthly average temperature in Willowbrook for July is 76 degrees
  • The lowest monthly average temperature in Willowbrook for January is 26 degrees
  • The most monthly precipitation in Willowbrook occurs in August with 5.1 inches
  • The air quality index in Willowbrook is 11% worse than the national average
  • The pollution index in Willowbrook is 196% worse than the national average

Compare Willowbrook, IL Weather

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      Willowbrook 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°F34°F26°F1.9"
      February21°F36°F28°F1.6"
      March33°F49°F40°F2.4"
      April42°F62°F51°F3.6"
      May52°F73°F61°F4.3"
      June63°F82°F72°F4.6"
      July68°F86°F76°F3.5"
      August67°F83°F75°F5.1"
      September60°F77°F68°F2.8"
      October48°F65°F55°F3.9"
      November36°F51°F43°F2.2"
      December25°F37°F31°F2.2"

      Willowbrook 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.
      IndexWillowbrookIllinoisNational
      Air quality index554150
      Pollution index14,981,3003,347,2955,066,862

      Willowbrook 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

      Willowbrook air quality information

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

      Average monthly Willowbrook temperature with heat index

      Willowbrook monthly precipitation with daily maximum

      Willowbrook monthly snow depth with daily maximum

      Willowbrook monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Oak Forest, IL28,0555510%
      Chicago Ridge, IL14,3685510%
      Addison, IL37,1925510%
      Merrionette Park, IL1,8965510%
      Berkeley, IL5,2015510%
      Willowbrook, IL8,6035510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Orange Park, FL8,6034314%
      Chester, IL8,599548%
      Florence, OR8,5971962%
      Sugarmill Woods, FL8,5963040%
      Four Corners, MD8,596476%
      Willowbrook, IL8,6035510%
      Source: The Willowbrook, 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.