TODAY FEB27
TEMPERATURE42
HUMIDITY100
PRESSURE29.92
WIND COND.240 7.6
  • 5848Sat90%
  • 6029Sun20%
  • 5026Mon
  • 4832Tue
  • 5436Wed
daynightWeather update from Mount Vernon, Mount Vernon Airport at

Key findings

  • The highest monthly average temperature in Nason for July is 77 degrees
  • The lowest monthly average temperature in Nason for January is 32 degrees
  • The most monthly precipitation in Nason occurs in August with 11 inches
  • The air quality index in Nason is 14% better than the national average
  • The pollution index in Nason is 89% better than the national average

Compare Nason, IL Weather

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      Nason 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"

      Nason 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.
      IndexNasonIllinoisNational
      Air quality index434150
      Pollution index569,1783,347,2955,066,862

      Nason 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

      Nason air quality information

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

      Average monthly Nason temperature with heat index

      Nason monthly precipitation with daily maximum

      Nason monthly snow depth with daily maximum

      Nason monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Mount Vernon, IL14,8804314%
      Mulkeytown, IL1134314%
      Radom, IL1534314%
      St. Johns, IL2344314%
      Du Quoin, IL5,9324314%
      Nason, IL2664314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Newburg, PA2663628%
      Long Pine, NE2661962%
      Coffee City, TX2663628%
      Homeland, FL2663628%
      Edmondson, AR2664510%
      Nason, IL2664314%
      Source: The Nason, 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.