• 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
    more
  • 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
  • Fri

    Sep 19

    76°Lo 60°

    Pleasant with periods of sun

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

    Sep 20

    81°Lo 61°

    A couple of p.m. t-storms

    Low ragweed pollen levels
    • Precip
      66%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      77%
    more
  • Sun

    Sep 21

    77°Lo 54°

    A morning shower possible

    Ragweed Pollen Weather
    • Precip
      30%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      51%
    more
Next Previous
Hi 72° RealFeel® 75° Precipitation 2%

Day

N

E

S

W

  • E 5 mph
  • Gusts: 8 mph

Pleasant with plenty of sunshine

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 49° RealFeel® 46° Precipitation 2%

Night

N

E

S

W

  • ESE 4 mph
  • Gusts: 7 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 18

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 72° 76° 99° (1965) 84°
Low 49° 53° 34° (1929) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 12:22 of sunlight, then sets at 7:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:28 AM with 14:25 of moolight, then sets at 3:53 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 >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps