TODAY NOV21
TEMPERATURE37
HUMIDITY64
PRESSURE101320
WIND COND.
  • 4531Fri
  • 4936Sat
  • 5947Sun30%
  • 5526Mon40%
  • 4026Tue
daynightWeather update from Taylorville, Taylorville Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hillsboro for July is 75.9 degrees
  • The lowest monthly average temperature in Hillsboro for January is 29.4 degrees
  • The most monthly precipitation in Hillsboro occurs in April with 9.3 inches
  • The air quality index in Hillsboro is 5% better than the national average
  • The pollution index in Hillsboro is 76% better than the national average

Compare Hillsboro, IL Weather

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      Hillsboro 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°F38°F29°F3.3"
      February24°F40°F31°F3.5"
      March36°F55°F44°F3.9"
      April45°F67°F55°F9.3"
      May55°F75°F64°F5.6"
      June64°F84°F73°F7.9"
      July66°F86°F76°F5.0"
      August65°F86°F74°F5.1"
      September57°F80°F67°F6.0"
      October46°F68°F56°F5.6"
      November36°F54°F44°F3.6"
      December28°F42°F34°F3.6"

      Hillsboro 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.
      IndexHillsboroIllinoisNational
      Air quality index404142
      Pollution index647,2803,148,6942,726,193

      Hillsboro air quality

      MeasurementTotal
      Days measured360
      Days with good air quality287
      Days with moderate air quality73
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Hillsboro temperature with heat index

      Hillsboro monthly precipitation with daily maximum

      Hillsboro monthly snow depth with daily maximum

      Hillsboro monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Witt, IL6134020.0%
      Ohlman, IL1034020.0%
      Coffeen, IL6404020.0%
      Litchfield, IL6,6264020.0%
      Coalton, IL3374020.0%
      Hillsboro, IL6,1774020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Wainfleet, ON6,177n/a 
      New Whiteland, IN6,178548.0%
      Saint-Honoré, QC6,178n/a 
      Dacula, GA6,1753726.0%
      Clyde, OH6,1754020.0%
      Hillsboro, IL6,1774020.0%
      Source: The Hillsboro, 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.