TODAY MAR19
TEMPERATURE
HUMIDITY49
PRESSURE101120
WIND COND.230 24.1
  • 5530
  • 3926Wed
  • 4030Thu20%
  • 4328Fri70%
  • 3828Sat
daynightWeather update from Chicago, Chicago Midway Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Countryside for July is 76.3 degrees
  • The lowest monthly average temperature in Countryside for January is 26.2 degrees
  • The most monthly precipitation in Countryside occurs in August with 5.1 inches
  • The air quality index in Countryside is 31% worse than the national average
  • The pollution index in Countryside is 450% worse than the national average

Compare Countryside, IL Weather

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      Countryside 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
      January20°F34°F26°F1.9"
      February21°F36°F28°F1.6"
      March33°F49°F40°F2.4"
      April42°F62°F51°F3.6"
      May52°F73°F61°F4.3"
      June63°F82°F72°F4.6"
      July68°F86°F76°F3.5"
      August67°F83°F75°F5.1"
      September60°F77°F68°F2.8"
      October48°F65°F55°F3.9"
      November36°F51°F43°F2.2"
      December25°F37°F31°F2.2"

      Countryside 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.
      IndexCountrysideIllinoisNational
      Air quality index554142
      Pollution index14,981,3003,148,6942,726,193

      Countryside air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality121
      Days with moderate air quality227
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality1

      Countryside air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.140%
      Carbon Tetrachloride0.030%
      Lead0.020%
      Mercury0.010%

      Average monthly Countryside temperature with heat index

      Countryside monthly precipitation with daily maximum

      Countryside monthly snow depth with daily maximum

      Countryside monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Brookfield, IL18,5205510.0%
      Forest Park, IL13,8085510.0%
      Thornton, IL2,3085510.0%
      Homewood, IL18,6565510.0%
      Burbank, IL28,4475510.0%
      Countryside, IL5,9295510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Schlusser, PA5,9274412.0%
      Roanoke, AL5,9313824.0%
      Asbury, IA5,9312942.0%
      Oxford, MA5,9264020.0%
      Old Tappan, NJ5,924512.0%
      Countryside, IL5,9295510.0%
      Source: The Countryside, 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.