TODAY MAY15
TEMPERATURE53
HUMIDITY61
PRESSURE30.2
WIND COND.
  • 7057Sat20%40%
  • 7360Sun70%70%
  • 7161Mon70%70%
  • 7764Tue60%50%
  • 8266Wed50%60%
daynightWeather update from St. Louis Downtown Airport at

Key findings

  • The highest monthly average temperature in Columbia for August is 79.4 degrees
  • The lowest monthly average temperature in Columbia for February is 33 degrees
  • The most monthly precipitation in Columbia occurs in January with 11.3 inches
  • The air quality index in Columbia is 9% worse than the national average
  • The pollution index in Columbia is 20% worse than the national average

Compare Columbia, IL Weather

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      Columbia 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"

      Columbia 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.
      IndexColumbiaIllinoisNational
      Air quality index544150
      Pollution index6,055,6403,347,2955,066,862

      Columbia air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality134
      Days with moderate air quality221
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality2

      Columbia air quality information

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

      Average monthly Columbia temperature with heat index

      Columbia monthly precipitation with daily maximum

      Columbia monthly snow depth with daily maximum

      Columbia monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Caseyville, IL4,263548%
      Clayton, MO16,034548%
      Fenton, MO4,036548%
      Lakeshire, MO1,641548%
      Richmond Heights, MO8,486548%
      Columbia, IL10,193548%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Waterloo, IL10,197548%
      Rockport, TX10,1974216%
      Marlton, NJ10,187512%
      Eunice, LA10,1994118%
      Little Canada, MN10,202468%
      Columbia, IL10,193548%
      Source: The Columbia, 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.