• Today

    Aug 4

    82°Lo 58°

    Mostly sunny and beautiful

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

    Aug 5

    85°Lo 66°

    Mostly cloudy

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

    Aug 6

    81°Lo 64°

    Mostly cloudy and humid

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

    Aug 7

    84°Lo 66°

    Some sun, a t-storm; humid

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

    Aug 8

    85°Lo 67°

    Mostly sunny and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 85° RealFeel® 91° Precipitation 8%

Day

N

E

S

W

  • SSW 5 mph
  • Gusts: 6 mph

Mostly cloudy

  • Max UV Index: 6 (High)
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 66° RealFeel® 61° Precipitation 60%

Night

N

E

S

W

  • ESE 6 mph
  • Gusts: 9 mph

Mostly cloudy with a couple of showers and a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 5%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Ottawa Pollen Levels - August 5

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass Pollen

    Low

  • Ragweed Pollen

    Low

  • Tree Pollen

    Moderate

  • Mold Pollen

    Low

Temperature History - Aug 5

more Historical Weather Data >
  Today Normal Record 8/5/2014
High 85° 83° 107° (1918) 86°
Low 66° 64° 46° (1894) 62°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:54 AM with 14:14 of sunlight, then sets at 8:08 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:26 PM with 13:44 of moolight, then sets at 1:10 PM

Ottawa Weather Report

Chicago: Cooler Conditions to Last Through Week

August 4, 2015; 4:40 AM ET

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

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps