TODAY MAR28
TEMPERATURE37
HUMIDITY90
PRESSURE102410
WIND COND.
  • 7256Fri20%
  • 7453Sat30%30%
  • 7461Sun30%40%
  • 7652Mon50%80%
  • 6339Tue50%20%
daynightWeather update from Centralia Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Junction City for July is 77.8 degrees
  • The lowest monthly average temperature in Junction City for January is 32 degrees
  • The most monthly precipitation in Junction City occurs in April with 9.7 inches
  • The air quality index in Junction City is 2% worse than the national average
  • The pollution index in Junction City is 76% better than the national average

Compare Junction City, IL Weather

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      Junction City 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°F41°F32°F5.0"
      February26°F43°F34°F3.4"
      March38°F58°F47°F4.9"
      April47°F69°F57°F9.7"
      May57°F77°F66°F7.4"
      June66°F87°F76°F8.6"
      July68°F89°F78°F6.6"
      August66°F88°F76°F8.7"
      September58°F81°F68°F7.6"
      October47°F70°F58°F7.1"
      November37°F57°F46°F6.0"
      December30°F45°F36°F6.6"

      Junction City 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.
      IndexJunction CityIllinoisNational
      Air quality index434142
      Pollution index647,2803,148,6942,726,193

      Junction City 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

      Junction City air quality information

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

      Average monthly Junction City temperature with heat index

      Junction City monthly precipitation with daily maximum

      Junction City monthly snow depth with daily maximum

      Junction City monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Kinmundy, IL9154020.0%
      Walnut Hill, IL1124314.0%
      Odin, IL9994314.0%
      Central City, IL1,3534314.0%
      Sandoval, IL1,0994314.0%
      Junction City, IL5814314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Graham, GA5812648.0%
      Benham, KY5814510.0%
      Freeport, MI5813824.0%
      Randall, MN5812942.0%
      Morrisville, MO5813922.0%
      Junction City, IL5814314.0%
      Source: The Junction City, 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.