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    • Today

      Sep 25

      81° /58°
      A p.m. shower or heavy t-storm.
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      67° /53°F
      Clouds breaking; windy, cooler.
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Tue

      Sep 27

      64° /53°
      Partly sunny and breezy.
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      64° /57°
      Mainly cloudy with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      67° /58°
      Times of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    67°Hi RealFeel® 65° Precipitation 25%
    Clouds giving way to some sun, windy and cooler.
    • W 18 mph
    • Gusts: 25 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 5%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    53°Lo RealFeel® 46° Precipitation 15%
    Mainly clear.
    • W 13 mph
    • Gusts: 20 mph
    • Max UV Index: N/A
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Chicago Pollen Levels Sep 26

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

      Low

    • Ragweed Pollen

      Moderate

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 67° 71° 93° (1998) 76°
    Low 53° 53° 30° (1928) 61°

    Sunrise/Sunset

    • Sunrise: 6:43 AM
    • Sunset: 6:39 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:18 AM
    • Moonset: 4:31 PM
    • Duration: 14:13 hr
    Astronomy

    Chicago Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 25, 2016; 8:43 AM ET

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

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps