• Tonight

    Mar 26

    Lo 30°

    Cloudy, a couple of showers

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Fri

    Mar 27

    48°Lo 35°

    Chilly with clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Sat

    Mar 28

    57°Lo 42°

    Sunny to partly cloudy

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

    Mar 29

    68°Lo 36°

    Pleasant and warmer

    Low ragweed pollen levels
    • Precip
      18%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      44%
    more
  • Mon

    Mar 30

    73°Lo 48°

    Partly sunny and nice

    Ragweed Pollen Weather
    • Precip
      4%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      33%
    more
Next Previous
Hi 48° RealFeel® 53° Precipitation 25%

Day

N

E

S

W

  • NW 6 mph
  • Gusts: 9 mph

Chilly with times of clouds and sun

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 3%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 35° RealFeel® 28° Precipitation 13%

Night

N

E

S

W

  • SE 7 mph
  • Gusts: 12 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • 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 27

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - Mar 27

more Historical Weather Data >
  Today Normal Record 3/27/2014
High 48° 59° 84° (1956) 76°
Low 35° 35° 15° (1913) 38°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:14 AM with 12:26 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:52 PM with 14:22 of moolight, then sets at 3:14 AM

Making a Forecast: The Sixth Sense

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

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps