TODAY MAY17
TEMPERATURE73
HUMIDITY66
PRESSURE30.06
WIND COND.160 13
  • 7462Tue80%50%
  • 8063Wed30%20%
  • 8363Thu
  • 8363Fri
  • 8664Sat
daynightWeather update from Mount Vernon, Mount Vernon Airport at

Key findings

  • The highest monthly average temperature in Du Bois for July is 76.7 degrees
  • The lowest monthly average temperature in Du Bois for January is 31.8 degrees
  • The most monthly precipitation in Du Bois occurs in August with 11 inches
  • The air quality index in Du Bois is 14% better than the national average
  • The pollution index in Du Bois is 89% better than the national average

Compare Du Bois, IL Weather

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      Du Bois 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
      January23°F42°F32°F3.7"
      February25°F44°F34°F3.5"
      March37°F58°F46°F5.2"
      April46°F70°F57°F8.7"
      May54°F77°F65°F6.1"
      June63°F87°F74°F8.3"
      July66°F89°F77°F8.1"
      August64°F88°F75°F11.0"
      September57°F81°F68°F5.5"
      October45°F70°F56°F5.6"
      November34°F56°F44°F7.5"
      December28°F45°F36°F6.9"

      Du Bois 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.
      IndexDu BoisIllinoisNational
      Air quality index434150
      Pollution index569,1783,347,2955,066,862

      Du Bois 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

      Du Bois air quality information

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

      Average monthly Du Bois temperature with heat index

      Du Bois monthly precipitation with daily maximum

      Du Bois monthly snow depth with daily maximum

      Du Bois monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Nason, IL2664314%
      New Minden, IL1984314%
      Ashley, IL5534314%
      St. Johns, IL2344314%
      Waltonville, IL4124314%
      Du Bois, IL1494314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Grass Valley, OR1492354%
      Pulcifer, WI1493628%
      Boones Mill, VA1493824%
      Columbia, SD1492060%
      Media, IL1492942%
      Du Bois, IL1494314%
      Source: The Du Bois, 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.