• Tonight

    Sep 19

    Lo 58°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Sat

    Sep 20

    80°Lo 57°

    A heavy afternoon t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Sep 21

    71°Lo 47°

    Clouds breaking; not as warm

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

    Sep 22

    71°Lo 46°

    Times of clouds and sun

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      46%
    more
  • Tue

    Sep 23

    74°Lo 49°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      6%
    • Wind
      Speed
      3 mph
    • Cloud
      Cover
      11%
    more
Next Previous
Hi 76° RealFeel® 74° Precipitation 4%

Day

N

E

S

W

  • S 10 mph
  • Gusts: 26 mph

Mostly sunny; breezy this afternoon

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 58° RealFeel® 52° Precipitation 24%

Night

N

E

S

W

  • SSW 8 mph
  • Gusts: 15 mph

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 14%
  • 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 19

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 76° 76° 95° (1947) 92°
Low 58° 52° 34° (1929) 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:18 of sunlight, then sets at 6:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:23 AM with 14:05 of moolight, then sets at 4:28 PM

Top Story

Ottawa Weather Report

Chicago: Thunderstorms to Precede More Cool Air

September 19, 2014; 9:28 PM ET

Chicago is facing the threat of some disruptive thunderstorms on Saturday. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps