TODAY MAY29
TEMPERATURE74
HUMIDITY42
PRESSURE30.05
WIND COND.320 17.2
  • 7252Sat
  • 7356Sun
  • 7664Mon
  • 8870Tue
  • 8970Wed
daynightWeather update from Jacksonville Municipal Airport at
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Jacksonville 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
January21°F39°F29°F3.2"
February22°F41°F31°F2.9"
March35°F56°F44°F3.7"
April44°F68°F55°F6.8"
May55°F76°F65°F5.2"
June64°F85°F74°F8.0"
July66°F87°F76°F5.2"
August64°F85°F74°F6.3"
September57°F80°F68°F6.6"
October46°F68°F56°F3.3"
November36°F55°F45°F5.0"
December26°F41°F33°F5.3"

Did you know?

  • The highest monthly average temperature in Jacksonville for July is 76 degrees.
  • The lowest monthly average temperature in Jacksonville for January is 29 degrees.
  • The most monthly precipitation in Jacksonville occurs in June with 8 inches.
  • The air quality index in Jacksonville is 30% better than the national average.
  • The pollution index in Jacksonville is 91% better than the national average.

Compare Jacksonville, IL Weather To Other Cities

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      Jacksonville 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.
      IndexJacksonvilleIllinoisNational
      Air quality index354150
      Pollution index479,4233,347,2955,066,862

      Jacksonville air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality316
      Days with moderate air quality49
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Jacksonville air quality information

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

      Average monthly Jacksonville temperature with heat index

      Jacksonville monthly precipitation with daily maximum

      Jacksonville monthly snow depth with daily maximum

      Jacksonville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Chapin, IL4793530%
      Glasgow, IL1743530%
      South Jacksonville, IL3,2723530%
      Alsey, IL1843530%
      Concord, IL1673530%
      Jacksonville, IL19,0423530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Pinole, CA19,0404314%
      Montgomery, IL19,055198%
      Sherrelwood, CO19,029548%
      Bonney Lake, WA19,022492%
      Alamo, TX19,0213628%
      Jacksonville, IL19,0423530%
      Source: The Jacksonville, 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.