TODAY MAY27
TEMPERATURE78
HUMIDITY69
PRESSURE29.88
WIND COND.140 15
  • 7665Wed70%50%
  • 7964Thu40%80%
  • 7656Fri40%20%
  • 7456Sat
  • 7558Sun
daynightWeather update from St. Louis Downtown Airport at
How would you rate the weather in Collinsville?
Write a review to give others more information about this area.
How would you rate the air quality in Collinsville?
Write a review to give others more information about this area.
See all Collinsville poll results

Collinsville 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
January28°F43°F35°F11.3"
February26°F43°F33°F3.1"
March39°F61°F49°F5.3"
April45°F68°F56°F5.9"
May56°F80°F68°F4.4"
June65°F88°F76°F4.0"
July67°F88°F77°F9.1"
August69°F91°F79°F7.4"
September60°F84°F71°F8.8"
October48°F72°F59°F4.0"
November37°F59°F47°F8.5"
December27°F42°F34°F3.1"

Did you know?

  • The highest monthly average temperature in Collinsville for August is 79 degrees.
  • The lowest monthly average temperature in Collinsville for February is 33 degrees.
  • The most monthly precipitation in Collinsville occurs in January with 11.3 inches.
  • The air quality index in Collinsville is 21% worse than the national average.
  • The pollution index in Collinsville is 20% worse than the national average.

Compare Collinsville, IL Weather To Other Cities

      vs

      Collinsville 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.
      IndexCollinsvilleIllinoisNational
      Air quality index604150
      Pollution index6,055,6403,347,2955,066,862

      Collinsville 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

      Collinsville air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.100%
      Mercury0.230%

      Average monthly Collinsville temperature with heat index

      Collinsville monthly precipitation with daily maximum

      Collinsville monthly snow depth with daily maximum

      Collinsville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Dellwood, MO5,0206020%
      Lemay, MO16,7626020%
      Pine Lawn, MO3,4236020%
      Uplands Park, MO3886020%
      Alorton, IL1,9086020%
      Collinsville, IL24,8556020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Moscow, ID24,8551080%
      Coronado, CA24,8526122%
      Galt, CA24,8485714%
      Elmwood Park, IL24,8456020%
      Austin, MN24,8413726%
      Collinsville, IL24,8556020%
      Source: The Collinsville, 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.