TODAY MAY16
TEMPERATURE61
HUMIDITY67
PRESSURE30.2
WIND COND.230 7.6
  • 6552Mon
  • 6257Tue20%30%
  • 7761Wed40%
  • 8263Thu
  • 8462Fri
daynightWeather update from Chicago/Waukegan Regional Airport at

Key findings

  • The highest monthly average temperature in Zion for July is 72 degrees
  • The lowest monthly average temperature in Zion for January is 23.8 degrees
  • The most monthly precipitation in Zion occurs in June with 4.5 inches
  • The air quality index in Zion is 22% better than the national average
  • The pollution index in Zion is 38% better than the national average

Compare Zion, IL Weather

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      Zion 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
      January16°F32°F24°F1.4"
      February17°F33°F25°F1.5"
      March28°F45°F36°F2.6"
      April37°F57°F46°F4.1"
      May47°F68°F57°F3.7"
      June57°F77°F67°F4.5"
      July63°F82°F72°F4.4"
      August62°F80°F71°F3.7"
      September55°F73°F64°F3.3"
      October44°F62°F52°F3.4"
      November33°F49°F40°F2.0"
      December22°F36°F29°F2.5"

      Zion 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.
      IndexZionIllinoisNational
      Air quality index394150
      Pollution index3,131,7003,347,2955,066,862

      Zion air quality information

      MeasurementTotal
      Days measured203
      Days with good air quality174
      Days with moderate air quality28
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Zion air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.004%
      Mercury0.360%

      Average monthly Zion temperature with heat index

      Zion monthly precipitation with daily maximum

      Zion monthly snow depth with daily maximum

      Zion monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Antioch, IL14,3423922%
      Libertyville, IL20,4353922%
      Venetian Village, IL2,6233922%
      Lake Catherine, IL1,8883922%
      Camp Lake, WI4,1753922%
      Zion, IL24,1953922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Fairland, MD24,201476%
      Selma, CA24,2285612%
      Vero Beach South, FL24,2343628%
      Staunton, VA24,2343628%
      North Potomac, MD24,148476%
      Zion, IL24,1953922%
      Source: The Zion, 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.