TODAY FEB28
TEMPERATURE41
HUMIDITY82
PRESSURE29.84
WIND COND.120 9.4
  • 5125Sun30%
  • 3722Mon
  • 4833Tue
  • 5232Wed
  • 5432Thu
daynightWeather update from Chicago, Chicago Midway Airport at

Key findings

  • The highest monthly average temperature in Countryside for July is 76 degrees
  • The lowest monthly average temperature in Countryside for January is 26 degrees
  • The most monthly precipitation in Countryside occurs in August with 5.1 inches
  • The air quality index in Countryside is 11% worse than the national average
  • The pollution index in Countryside is 196% 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 index554150
      Pollution index14,981,3003,347,2955,066,862

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Bridgeview, IL16,3815510%
      Dolton, IL23,1135510%
      Markham, IL12,6335510%
      Posen, IL6,2515510%
      Worth, IL10,7765510%
      Countryside, IL5,9655510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Sheridan, CO5,9655816%
      Minot AFB, ND5,9643432%
      Simsbury Center, CT5,9684118%
      Dickson City, PA5,9703824%
      South Hooksett, NH5,9583726%
      Countryside, IL5,9655510%
      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.