• Today

    May 27

    78°Lo 59°

    Clouds breaking; seasonable

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Thu

    May 28

    86°Lo 64°

    Mostly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Fri

    May 29

    84°Lo 60°

    Clouds and sun with a t-storm

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

    May 30

    66°Lo 43°

    Occasional rain and a t-storm

    Low ragweed pollen levels
    • Precip
      55%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      83%
    more
  • Sun

    May 31

    68°Lo 47°

    Partly sunny

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      45%
    more
Next Previous
Hi 78° RealFeel® 81° Precipitation 25%

Day

N

E

S

W

  • W 10 mph
  • Gusts: 24 mph

Clouds giving way to some sun and seasonably warm

  • Max UV Index: 7 (High)
  • Thunderstorms: 8%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 59° RealFeel® 60° Precipitation 2%

Night

N

E

S

W

  • SW 2 mph
  • Gusts: 6 mph

Partly cloudy

  • 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 - May 27

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - May 27

more Historical Weather Data >
  Today Normal Record 5/27/2014
High 78° 76° 95° (1911) 83°
Low 59° 54° 33° (1895) 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:27 AM with 14:51 of sunlight, then sets at 8:18 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:32 PM with 12:10 of moolight, then sets at 2:42 AM

Ottawa Weather Report

Chicago: Temperatures to Take Dramatic Swing at Late Week

May 27, 2015; 4:24 AM ET

Following the chance for early-week storms, temperatures in the Chicago area will be on a roller coaster leading into the weekend. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps