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    • Tonight

      Aug 18

      66° Lo F
      Becoming cloudy, a t-storm
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
    • Sat

      Aug 19

      81° /67°
      Clouds giving way to some sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Sun

      Aug 20

      86° /72°
      Mostly sunny and humid
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Mon

      Aug 21

      86° /72°
      Partly sunny, warm and muggy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Aug 22

      81° /65°
      Strong t-storms, mainly later
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    82°Hi RealFeel® 85° Precipitation 7%
    Pleasant with periods of clouds and sunshine
    • Winds from the
    • WNW 11 mph
    • Gusts: 21 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 7%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    66°Lo RealFeel® 64° Precipitation 60%
    Becoming cloudy with a shower or thunderstorm around from late evening on
    • Winds from the
    • WNW 6 mph
    • Gusts: 11 mph
    • Max UV Index: N/A
    • Thunderstorms: 40%
    • Precipitation: 0.35 in
    • Rain: 0.35 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1.5 hrs
    • Hours of Rain: 1.5 hrs

    Chicago Pollen Levels Aug 18

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

      Low

    • Ragweed Pollen

      High

    • Mold

      High

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 8/18/2016
    High 82° 82° 99° (1936) 86°
    Low 66° 66° 49° (1963) 72°

    Sunrise/Sunset

    • Sunrise: 6:02 AM
    • Sunset: 7:48 PM
    • Duration: 13:46 hr

    Moonrise/Moonset

    • Moonrise: 2:30 AM
    • Moonset: 5:31 PM
    • Duration: 15:01 hr
    Astronomy

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps