• Early AM

    Sep 17

    Lo 44°

    Clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Sep 17

    71°Lo 47°

    Mostly sunny and pleasant

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

    Sep 18

    72°Lo 49°

    Sunny and pleasant

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

    Sep 19

    76°Lo 61°

    Pleasant with periods of sun

    Low ragweed pollen levels
    • Precip
      5%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      46%
    more
  • Sat

    Sep 20

    80°Lo 60°

    A couple of p.m. t-storms

    Low ragweed pollen levels
    • Precip
      66%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      77%
    more
Next Previous
Hi 71° RealFeel® 76° Precipitation 4%

Day

N

E

S

W

  • WSW 2 mph
  • Gusts: 3 mph

Mostly sunny and pleasant

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 6%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 47° RealFeel® 45° Precipitation 1%

Night

N

E

S

W

  • ENE 2 mph
  • Gusts: 5 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • 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 17

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 17

more Historical Weather Data >
  Today Normal Record 9/17/2013
High 71° 76° 97° (1927) 74°
Low 47° 53° 31° (1937) 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 12:25 of sunlight, then sets at 7:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:35 AM with 14:38 of moolight, then sets at 3:13 PM

Top Story

Ottawa Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 17, 2014; 1:12 AM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps