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    • Today

      Sep 26

      67° /47°
      Breezy with sunshine
      • 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
    • Tue

      Sep 27

      65° /48°
      Increasing clouds and breezy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      62° /54°
      An a.m. shower; rather cloudy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      67° /53°
      Variable clouds with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      68° /51°F
      A couple of showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low

    Day

    68°Hi RealFeel® 68° Precipitation 69%
    Some sun, then turning cloudy with a couple of showers
    • NE 10 mph
    • Gusts: 16 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 20%
    • Precipitation: 0.22 in
    • Rain: 0.22 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 3 hrs
    • Hours of Rain: 3 hrs

    Night

    51°Lo RealFeel® 50° Precipitation 55%
    Partly cloudy with a passing shower late
    • N 6 mph
    • Gusts: 10 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.05 in
    • Rain: 0.05 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1 hrs
    • Hours of Rain: 1 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 68° 69° 84° (2007) 61°
    Low 51° 48° 35° (2004) 44°

    Sunrise/Sunset

    • Sunrise: 6:49 AM
    • Sunset: 6:35 PM
    • Duration: 11:46 hr

    Moonrise/Moonset

    • Moonrise: 6:20 AM
    • Moonset: 6:40 PM
    • Duration: 12:20 hr
    Astronomy

    Carol Stream Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 12:13 PM ET

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

    Fri. Dust & Dander

    Fri. Wind Maps