• Today

    Mar 27

    34°Lo 13°

    Colder with a snow shower

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

    Mar 28

    34°Lo 19°

    Mostly sunny and cold

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

    Mar 29

    46°Lo 33°

    An afternoon shower or two

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

    Mar 30

    51°Lo 33°

    Breezy with periods of sun

    Low ragweed pollen levels
    • Precip
      5%
    • Wind
      Speed
      16 mph
    • Cloud
      Cover
      46%
    more
  • Tue

    Mar 31

    58°Lo 36°

    Mostly sunny and breezy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      17 mph
    • Cloud
      Cover
      19%
    more
Next Previous
Hi 34° RealFeel® 33° Precipitation 1%

Day

N

E

S

W

  • NNW 7 mph
  • Gusts: 13 mph

Cold with sunshine and a few clouds

  • 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 19° RealFeel® 8° Precipitation 5%

Night

N

E

S

W

  • S 5 mph
  • Gusts: 13 mph

Clear and cold

  • Max UV Index: N/A
  • Thunderstorms: 2%
  • 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 - March 28

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Mar 28

more Historical Weather Data >
  Today Normal Record 3/28/2014
High 34° 53° N/A 51°
Low 19° 33° N/A 39°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:27 AM with 12:30 of sunlight, then sets at 7:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:55 PM with 14:18 of moolight, then sets at 4:13 AM

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps