• Today

    Apr 21

    78°Lo 50°

    A thunderstorm in spots

    Low indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Tue

    Apr 22

    60°Lo 32°

    A morning shower; cooler

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Wed

    Apr 23

    58°Lo 40°

    Partly sunny

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Thu

    Apr 24

    68°Lo 48°

    Times of clouds and sun

    Moderate indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      11 mph
    • Cloud
      Cover
      69%
    more
  • Fri

    Apr 25

    70°Lo 40°

    Clouds and sun with a shower

    Low indoor dust & dander levels
    • Precip
      48%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      54%
    more
Next Previous
Hi 78° RealFeel® 78° Precipitation 40%

Day

N

E

S

W

  • SW 8 mph
  • Gusts: 16 mph

Some sun, then clouds and very warm; a shower or thunderstorm in spots late this afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 40%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 50° RealFeel® 42° Precipitation 60%

Night

N

E

S

W

  • WSW 10 mph
  • Gusts: 19 mph

Mainly cloudy with a couple of showers; breezy late

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.08 in
  • Rain: 0.08 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Ottawa Pollen Levels - April 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 78° 63° N/A 52°
Low 50° 41° N/A 29°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:48 AM with 13:34 of sunlight, then sets at 8:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:53 AM with 10:20 of moolight, then sets at 12:13 PM

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps