• Tonight

    May 1

    Lo 45°

    Rain and drizzle this evening

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    May 2

    58°Lo 41°

    Variable clouds

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

    May 3

    68°Lo 49°

    Warmer with some sun

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

    May 4

    58°Lo 41°

    Cooler with a shower in spots

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

    May 5

    64°Lo 44°

    Partly sunny and breezy

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 58° RealFeel® 57° Precipitation 25%

Day

N

E

S

W

  • NE 10 mph
  • Gusts: 15 mph

Variable clouds

  • Max UV Index: 3 (Moderate)
  • 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 41° RealFeel® 41° Precipitation 16%

Night

N

E

S

W

  • NNW 4 mph
  • Gusts: 10 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 5%
  • 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 - May 2

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

    Low

  • Ragweed Pollen

    Low

  • Mold

    Low

  • Grass Pollen

    Low

Temperature History - May 2

more Historical Weather Data >
  Today Normal Record 5/2/2015
High 58° 68° 94° (1901) 78°
Low 41° 46° 29° (1966) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:50 AM with 14:05 of sunlight, then sets at 7:55 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:24 AM with 11:42 of moolight, then sets at 3:06 PM

Ottawa Weather Report

Chicago: Temperature roller coaster in store for new week

May 1, 2016; 3:54 PM ET

The start of May will bring a fluctuation in temperatures throughout the week in Chicago. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps