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Key findings

  • The highest monthly average temperature in Forest Park for July is 76.3 degrees
  • The lowest monthly average temperature in Forest Park for January is 26.2 degrees
  • The most monthly precipitation in Forest Park occurs in August with 5.1 inches
  • The air quality index in Forest Park is 11% worse than the national average
  • The pollution index in Forest Park is 75% worse than the national average

Compare Forest Park, IL Weather

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      Forest Park 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"

      Forest Park 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.
      IndexForest ParkIllinoisNational
      Air quality index554150
      Pollution index4,766,0003,148,6942,726,193

      Forest Park 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

      Forest Park air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.050%
      Carbon Tetrachloride0.000%
      Lead0.020%
      Mercury0.090%

      Average monthly Forest Park temperature with heat index

      Forest Park monthly precipitation with daily maximum

      Forest Park monthly snow depth with daily maximum

      Forest Park monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Berwyn, IL56,4145510.0%
      Cicero, IL83,9725510.0%
      Stickney, IL6,7785510.0%
      Hickory Hills, IL13,8585510.0%
      Evergreen Park, IL19,8495510.0%
      Forest Park, IL14,1375510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Jasper, AL14,137536.0%
      Willowick, OH14,13150= 100
      Hewitt, TX14,1283824.0%
      Conway, FL14,1243922.0%
      Bridgetown, OH14,150548.0%
      Forest Park, IL14,1375510.0%
      Source: The Forest Park, 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.