TODAY MAY14
TEMPERATURE40
HUMIDITY93
PRESSURE30.33
WIND COND.
  • 7148
  • 7055Sat50%
  • 7460Sun70%70%
  • 7360Mon70%
  • 7562Tue
daynightWeather update from Southern Illinois Airport at

Key findings

  • The highest monthly average temperature in Vergennes for July is 77.9 degrees
  • The lowest monthly average temperature in Vergennes for January is 33.8 degrees
  • The most monthly precipitation in Vergennes occurs in April with 6.2 inches
  • The air quality index in Vergennes is 14% better than the national average
  • The pollution index in Vergennes is 89% better than the national average

Compare Vergennes, IL Weather

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      Vergennes 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
      January25°F44°F34°F2.3"
      February27°F46°F36°F2.5"
      March38°F60°F48°F4.8"
      April47°F70°F58°F6.2"
      May56°F78°F67°F4.9"
      June66°F88°F76°F4.1"
      July68°F89°F78°F5.0"
      August66°F88°F76°F3.5"
      September57°F81°F68°F3.4"
      October46°F71°F58°F3.6"
      November36°F58°F46°F3.7"
      December30°F47°F38°F3.7"

      Vergennes 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.
      IndexVergennesIllinoisNational
      Air quality index434150
      Pollution index569,1783,347,2955,066,862

      Vergennes air quality information

      MeasurementTotal
      Days measured344
      Days with good air quality269
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Vergennes air quality information

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

      Average monthly Vergennes temperature with heat index

      Vergennes monthly precipitation with daily maximum

      Vergennes monthly snow depth with daily maximum

      Vergennes monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Dowell, IL3504314%
      Cambria, IL1,3374314%
      Bush, IL2444314%
      Hurst, IL7054314%
      Du Quoin, IL5,9324314%
      Vergennes, IL2074314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      North Bay, WI2073922%
      Cabot, VT2073726%
      Ehrenfeld, PA2073922%
      East Nicolaus, CA2074412%
      Posen, MI2073236%
      Vergennes, IL2074314%
      Source: The Vergennes, 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.