TODAY MAR19
TEMPERATURE25
HUMIDITY68
PRESSURE102000
WIND COND.240 14.8
  • 5828Tue
  • 4124Wed
  • 4431Thu50%
  • 4826Fri70%30%
  • 4429Sat30%
daynightWeather update from Clinton Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hillsdale for July is 73.3 degrees
  • The lowest monthly average temperature in Hillsdale for January is 21.4 degrees
  • The most monthly precipitation in Hillsdale occurs in August with 9.8 inches
  • The air quality index in Hillsdale is equal to the national average
  • The pollution index in Hillsdale is 36% better than the national average

Compare Hillsdale, IL Weather

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      Hillsdale 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
      January13°F31°F21°F2.9"
      February15°F33°F23°F2.6"
      March29°F49°F38°F4.2"
      April39°F62°F50°F6.5"
      May51°F74°F61°F6.2"
      June61°F82°F71°F7.9"
      July64°F84°F73°F6.6"
      August61°F82°F71°F9.8"
      September53°F76°F64°F6.2"
      October42°F64°F52°F6.1"
      November30°F50°F39°F4.3"
      December19°F34°F26°F4.0"

      Hillsdale 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.
      IndexHillsdaleIllinoisNational
      Air quality index424142
      Pollution index1,753,5903,148,6942,726,193

      Hillsdale air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality268
      Days with moderate air quality96
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Hillsdale air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.001%

      Average monthly Hillsdale temperature with heat index

      Hillsdale monthly precipitation with daily maximum

      Hillsdale monthly snow depth with daily maximum

      Hillsdale monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Princeton, IA9424216.0%
      Morrison, IL3,8504216.0%
      Atkinson, IL1,3354216.0%
      Camanche, IA4,3424216.0%
      Cordova, IL6854216.0%
      Hillsdale, IL5314216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Central City, CO531476.0%
      University Park, IA5313922.0%
      Pretty Prairie, KS5314020.0%
      Hartland, ME5313138.0%
      Ottertail, MN5312942.0%
      Hillsdale, IL5314216.0%
      Source: The Hillsdale, 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.