• Today

    Jul 24

    93°Lo 70°

    A thunderstorm around

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Jul 25

    87°Lo 64°

    Mostly sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
  • Tue

    Jul 26

    87°Lo 66°

    Sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Jul 27

    88°Lo 69°

    Humid with periods of sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Thu

    Jul 28

    83°Lo 67°

    A couple of thunderstorms

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 87° RealFeel® 94° Precipitation 9%

Day

N

E

S

W

  • NNW 6 mph
  • Gusts: 9 mph

Mostly sunny and humid

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 64° RealFeel® 66° Precipitation 11%

Night

N

E

S

W

  • NNW 2 mph
  • Gusts: 7 mph

Clear and humid

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • 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 - July 25

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Tree Pollen

    Low

  • Ragweed Pollen

    Moderate

  • Mold

    High

  • Grass Pollen

    Low

Temperature History - Jul 25

more Historical Weather Data >
  Today Normal Record 7/25/2015
High 87° 84° 107° (1940) 89°
Low 64° 64° 50° (1920) 69°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:44 AM with 14:35 of sunlight, then sets at 8:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:50 PM with 13:18 of moolight, then sets at 1:08 PM

Ottawa Weather Report

By the numbers: Recapping the week's stifling central US heat

July 24, 2016; 10:33 AM ET

Stifling heat has been baking the central United States but will finally ease across northern areas this weekend. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps