• Today

    Aug 3

    81°Lo 56°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Tue

    Aug 4

    82°Lo 62°

    Humid with periods of sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
  • Wed

    Aug 5

    81°Lo 64°

    Mostly cloudy with a t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Thu

    Aug 6

    79°Lo 60°

    Sun and areas of low clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Fri

    Aug 7

    79°Lo 62°

    Partly sunny and beautiful

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Cloudy 65° Lo 62° RealFeel® 67° / 62°

N

E

S

W

  • Precipitation: 25%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 88%
  • Cloud Cover: 95%
  • Dew Point: 60° F
  • Visibility: 10 mi
4 mph

Temperature History - Aug 4

more Historical Weather Data >
  Today Normal Record 8/4/2014
High 82° 83° 103° (1947) 86°
Low 62° 64° 46° (1912) 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:53 AM with 14:16 of sunlight, then sets at 8:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:48 PM with 13:14 of moolight, then sets at 12:02 PM

Ottawa Weather Report

Chicago: Cooler Conditions to Last Through Week

August 3, 2015; 7:50 AM ET

The Chicagoland area will experience cooler weather throughout the week. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps