• Early AM

    Aug 4

    Lo 56°

    Mainly clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Today

    Aug 4

    82°Lo 58°

    Mostly sunny and beautiful

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

    Aug 5

    84°Lo 65°

    Mostly cloudy

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

    Aug 6

    82°Lo 65°

    Mostly cloudy and humid

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

    Aug 7

    83°Lo 65°

    Some sun, a t-storm; humid

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Sunny
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 68° 74° 77° 78° 80° 81° 82° 81°
RealFeel® 71° 78° 82° 84° 85° 86° 86° 84°
Humidity 62% 54% 50% 43% 39% 37% 36% 36%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 5 WNW 6 WNW 7 WNW 7 WNW 8 WNW 8 WNW 8 WNW 8 WNW
UV Index 3 4 6 7 7 7 6 4
Cloud Cover 4% 5% 4% 3% 1% 26% 26% 26%
Dew Point 55° 56° 57° 54° 53° 52° 53° 52°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 4

more Historical Weather Data >
  Today Normal Record 8/4/2014
High 82° 83° 103° (1947) 86°
Low 58° 64° 46° (1912) 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:53 AM with 14:16 of sunlight, then sets at 8:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:48 PM with 13:14 of moolight, then sets at 12:02 PM

Ottawa Weather Report

Chicago: Cooler Conditions to Last Through Week

August 4, 2015; 3:20 AM ET

The Chicagoland area will experience cooler weather throughout the week. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps