• Tonight

    Sep 3

    Lo 68°

    Partly cloudy, warm and humid

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

    Sep 4

    90°Lo 70°

    A thunderstorm in spots

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

    Sep 5

    90°Lo 69°

    Partly sunny and hot

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

    Sep 6

    92°Lo 74°

    Partly sunny, hot and humid

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

    Sep 7

    87°Lo 69°

    A t-storm in the afternoon

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 72° 71° 70° 68° 70° 72° 76° 80°
RealFeel® 74° 73° 72° 70° 72° 76° 82° 90°
Humidity 87% 89% 90% 92% 91% 86% 78% 72%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
7%
 
7%
 
7%
 
7%
 
5%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 4 SW 4 WSW 4 WSW 2 WSW 2 WSW 2 WSW 4 WSW 4 WSW
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 46% 46% 46% 46% 46% 46% 46% 46%
Dew Point 67° 67° 67° 66° 67° 68° 68° 70°
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 - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 90° 80° 102° (1925) 86°
Low 70° 59° 41° (1928) 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:24 AM with 13:00 of sunlight, then sets at 7:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:32 PM with 14:38 of moolight, then sets at 2:10 PM

Ottawa Weather Report

Chicago: Sun, Humidity to Grip Region Before Stormy Labor Day

September 3, 2015; 12:03 PM ET

As the Labor Day weekend shapes up, Chicago residents will see mostly sunny and humid conditions until the holiday itself on Monday. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps