• Today

    May 3

    68°Lo 48°

    Warmer with some sun

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

    May 4

    57°Lo 41°

    Cooler with a shower in spots

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

    May 5

    65°Lo 45°

    Partly sunny and warmer

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

    May 6

    79°Lo 57°

    Sunny, pleasant and warmer

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

    May 7

    74°Lo 47°

    Rain and a thunderstorm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 68° RealFeel® 73° Precipitation 16%

Day

N

E

S

W

  • W 7 mph
  • Gusts: 14 mph

Warmer with sun and some clouds

  • Max UV Index: 6 (High)
  • Thunderstorms: 6%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 48° RealFeel® 43° Precipitation 65%

Night

N

E

S

W

  • WNW 9 mph
  • Gusts: 14 mph

Mainly cloudy with a brief shower or two late

  • Max UV Index: N/A
  • Thunderstorms: 22%
  • Precipitation: 0.09 in
  • Rain: 0.09 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs

Ottawa Pollen Levels - May 3

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

    Low

  • Ragweed Pollen

    Low

  • Mold

    Low

  • Grass Pollen

    Low

Temperature History - May 3

more Historical Weather Data >
  Today Normal Record 5/3/2015
High 68° 69° 93° (1895) 79°
Low 48° 46° 30° (2005) 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:49 AM with 14:07 of sunlight, then sets at 7:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:00 AM with 12:17 of moolight, then sets at 4:17 PM

Ottawa Weather Report

Chicago: Temperature roller coaster in store for this week

May 3, 2016; 4:03 AM ET

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

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps