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    • Early AM

      Sep 27

      54° Lo
      Mostly clear
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Today

      Sep 27

      66° /52°F
      Mostly sunny and breezy.
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Wed

      Sep 28

      63° /59°
      A few afternoon showers.
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      68° /60°
      Variable clouds with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      67° /60°
      Mostly cloudy, showers around
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    66°Hi RealFeel® 64° Precipitation 25%
    Sunny to partly cloudy and breezy.
    • W 16 mph
    • Gusts: 23 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    52°Lo RealFeel® 45° Precipitation 65%
    Mostly cloudy with a couple of showers.
    • WNW 10 mph
    • Gusts: 16 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.15 in
    • Rain: 0.15 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Chicago Pollen Levels Sep 27

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Low

    • Ragweed Pollen

      Moderate

    • Mold

      High

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 66° 71° 91° (1971) 76°
    Low 52° 52° 31° (1942) 67°

    Sunrise/Sunset

    • Sunrise: 6:45 AM
    • Sunset: 6:39 PM
    • Duration: 11:54 hr

    Moonrise/Moonset

    • Moonrise: 3:20 AM
    • Moonset: 5:08 PM
    • Duration: 13:48 hr
    Astronomy

    Chicago Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 27, 2016; 12:53 AM ET

    Gusty winds will accompany a push of chilly air across the Great Lakes through Tuesday. More >

    Tue. Pollen

    Tue. Dust & Dander

    Tue. Wind Maps