• Today

    Sep 4

    89°Lo 70°

    A thunderstorm in spots

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

    Sep 5

    91°Lo 69°

    Partly sunny and hot

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Sun

    Sep 6

    93°Lo 71°

    Partly sunny, hot and humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Sep 7

    84°Lo 70°

    A t-storm in the afternoon

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

    Sep 8

    80°Lo 67°

    Mostly cloudy with t-storms

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 91° RealFeel® 100° Precipitation 12%

Day

N

E

S

W

  • SSW 6 mph
  • Gusts: 8 mph

Partly sunny and hot

  • Max UV Index: 6 (High)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 69° RealFeel® 71° Precipitation 6%

Night

N

E

S

W

  • S 5 mph
  • Gusts: 6 mph

Partly cloudy, warm and humid

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Ottawa Pollen Levels - September 5

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

    Low

  • Tree Pollen

    Low

  • Ragweed Pollen

    Low

  • Mold Pollen

    Low

Temperature History - Sep 5

more Historical Weather Data >
  Today Normal Record 9/5/2014
High 91° 80° 103° (1899) 88°
Low 69° 58° 42° (1974) 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 12:57 of sunlight, then sets at 7:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:23 PM with 19:46 of moolight, then sets at 2:10 PM

Ottawa Weather Report

Chicago: Sun, Humidity to Grip Region Before Stormy Labor Day

September 4, 2015; 10:04 AM ET

As the Labor Day weekend shapes up, Chicago residents will see mostly sunny and humid conditions until the holiday itself on Monday. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps