TODAY AUG17
TEMPERATURE79
HUMIDITY84
PRESSURE29.98
WIND COND.250 10.3
  • 8466Sat
  • 8568Sun
  • 8265Mon50%50%
  • 7959Tue30%20%
  • 7857Wed
daynightWeather update from St. Louis Regional Airport at

Wilsonville Average Weather

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
January23°F38°F29°F3.3"
February24°F40°F31°F3.5"
March36°F55°F44°F3.9"
April45°F67°F55°F9.3"
May55°F75°F64°F5.6"
June64°F84°F73°F7.9"
July66°F86°F76°F5.0"
August65°F86°F74°F5.1"
September57°F80°F67°F6.0"
October46°F68°F56°F5.6"
November36°F54°F44°F3.6"
December28°F42°F34°F3.6"

Did you know?

  • The highest monthly average temperature in Wilsonville for July is 76 degrees.
  • The lowest monthly average temperature in Wilsonville for January is 29 degrees.
  • The most monthly precipitation in Wilsonville occurs in April with 9.3 inches.
  • The air quality index in Wilsonville is 20% worse than the national average.
  • The pollution index in Wilsonville is 87% better than the national average.

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Compare Wilsonville, IL Weather To Other Cities

Wilsonville 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.
IndexWilsonvilleIllinoisNational
Air quality index604150
Pollution index647,2803,347,2955,066,862

Wilsonville air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

Wilsonville air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Wilsonville temperature with heat index

Wilsonville monthly precipitation with daily maximum

Wilsonville monthly snow depth with daily maximum

Wilsonville monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Carlinville, IL5,2973530%
Chesterfield, IL3363530%
Litchfield, IL6,9763530%
Bunker Hill, IL1,7306020%
Eagarville, IL1656020%
Wilsonville, IL6586020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Holiday Lakes, OH6583628%
Paul Smiths, NY6582354%
Axtell, NE6581962%
Wanamie, PA6584020%
Medora, IN6583922%
Wilsonville, IL6586020%
Source: The Wilsonville, 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.