• Early AM

    Sep 3

    Lo 58°

    Clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Sep 3

    85°Lo 69°

    Partly sunny and warm

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
  • Thu

    Sep 4

    89°Lo 71°

    Partly sunny, warm and humid

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
    more
  • Fri

    Sep 5

    79°Lo 58°

    Not as warm with a t-storm

    High ragweed pollen levels
    • Precip
      57%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      78%
    more
  • Sat

    Sep 6

    73°Lo 52°

    Beautiful with clouds and sun

    Ragweed Pollen Weather
    • Precip
      11%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 85° RealFeel® 86° Precipitation 16%

Day

N

E

S

W

  • S 7 mph
  • Gusts: 14 mph

Partly sunny and warm

  • Max UV Index: 6 (High)
  • Thunderstorms: 16%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 69° RealFeel® 66° Precipitation 55%

Night

N

E

S

W

  • S 8 mph
  • Gusts: 12 mph

More humid with increasing clouds; a shower or thunderstorm toward dawn

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.05 in
  • Rain: 0.05 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Ottawa Pollen Levels - September 3

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

    Pollen

    Low

  • Weed

    Pollen

    High

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2013
High 85° 81° 98° (1925) 75°
Low 69° 59° 42° (1974) 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 13:05 of sunlight, then sets at 7:27 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:11 PM with 10:04 of moolight, then sets at 12:15 AM

Top Story

Ottawa Weather Report

Chicago: Cooler, Less Humid Air to Return by Late Week

September 2, 2014; 6:11 PM ET

While Labor Day marks an unofficial end to the summer, the Chicago area will see warm, humid conditions continue before temperatures slide late in the week. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps