TODAY JUN02
TEMPERATURE68
HUMIDITY48
PRESSURE30.02
WIND COND.
  • 9069Tue
  • 8460Wed40%60%
  • 8466Thu20%20%
  • 8562Fri
  • 7759Sat
daynightWeather update from Lansing Municipal Airport at
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Thornton 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
January18°F34°F26°F4.5"
February19°F35°F27°F3.6"
March31°F49°F39°F4.4"
April40°F62°F50°F5.4"
May50°F72°F60°F6.5"
June60°F81°F70°F5.8"
July64°F84°F74°F8.0"
August63°F82°F72°F7.5"
September56°F76°F65°F5.4"
October45°F64°F54°F6.2"
November33°F51°F42°F5.4"
December24°F38°F31°F3.8"

Did you know?

  • The highest monthly average temperature in Thornton for July is 74 degrees.
  • The lowest monthly average temperature in Thornton for January is 26 degrees.
  • The most monthly precipitation in Thornton occurs in July with 8 inches.
  • The air quality index in Thornton is 21% worse than the national average.
  • The pollution index in Thornton is 69% better than the national average.

Compare Thornton, IL Weather To Other Cities

      vs

      Thornton 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.
      IndexThorntonIllinoisNational
      Air quality index604150
      Pollution index1,558,0703,347,2955,066,862

      Thornton air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality72
      Days with moderate air quality281
      Days w/ poor A.Q. for sensitive groups11
      Days with unhealthy air quality1

      Thornton air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.010%
      Carbon Tetrachloride0.070%
      Lead0.090%
      Mercury0.010%

      Average monthly Thornton temperature with heat index

      Thornton monthly precipitation with daily maximum

      Thornton monthly snow depth with daily maximum

      Thornton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Crown Point, IN28,7433138%
      Alsip, IL19,3356020%
      Burbank, IL29,0876020%
      Chicago Heights, IL30,3496020%
      Crestwood, IL10,9896020%
      Thornton, IL2,6146020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Leadville, CO2,6144216%
      New London, OH2,6143432%
      Rhinebeck, NY2,6143628%
      Derry, PA2,6144510%
      Kenilworth, IL2,6136020%
      Thornton, IL2,6146020%
      Source: The Thornton, 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.