TODAY JUL12
TEMPERATURE78
HUMIDITY81
PRESSURE29.84
WIND COND.190 5.4
  • 8666Sun30%
  • 8865Mon
  • 9172Tue
  • 9275Wed
  • 9374Thu
daynightWeather update from Marion - Williamson County Regional Airport at

Key findings

  • The highest monthly average temperature in Vienna for July is 78 degrees
  • The lowest monthly average temperature in Vienna for January is 36 degrees
  • The most monthly precipitation in Vienna occurs in April with 8.6 inches
  • The air quality index in Vienna is 12% better than the national average
  • The pollution index in Vienna is 98% better than the national average

Compare Vienna, IL Weather

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      Vienna 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°F46°F36°F5.4"
      February30°F48°F38°F3.9"
      March40°F60°F49°F7.8"
      April49°F72°F60°F8.6"
      May58°F79°F67°F6.3"
      June67°F88°F77°F6.6"
      July69°F88°F78°F6.4"
      August67°F88°F77°F6.0"
      September59°F82°F70°F5.5"
      October48°F72°F59°F5.5"
      November38°F59°F47°F5.8"
      December32°F48°F39°F6.3"

      Vienna 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.
      IndexViennaIllinoisNational
      Air quality index444150
      Pollution index125,3593,347,2955,066,862

      Vienna air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality261
      Days with moderate air quality103
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Vienna air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.003%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Vienna temperature with heat index

      Vienna monthly precipitation with daily maximum

      Vienna monthly snow depth with daily maximum

      Vienna monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Cypress, IL2324412%
      New Burnside, IL2074412%
      Belknap, IL544412%
      Goreville, IL1,1784412%
      New Grand Chain, IL1634412%
      Vienna, IL1,4314412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Schoolcraft, MI1,4313824%
      Avondale, PA1,4304510%
      Langhorne Manor, PA1,4304118%
      Athens, NY1,4323726%
      Warren, IN1,4303138%
      Vienna, IL1,4314412%
      Source: The Vienna, 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.