• Today

    Sep 1

    90°Lo 69°

    Hazy sun, hot and humid

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

    Sep 2

    90°Lo 69°

    Fog in the a.m.; partly sunny

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

    Sep 3

    87°Lo 67°

    Partly sunny and very warm

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

    Sep 4

    88°Lo 67°

    Mostly sunny and very warm

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

    Sep 5

    88°Lo 62°

    Sunshine, very warm and humid

    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 >
  Tue
4pm
5pm 6pm 7pm 8pm 9pm 10pm 11pm
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Forecast
Hazy
Hazy
Hazy
Hazy
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 90° 88° 86° 83° 80° 78° 76° 75°
RealFeel® 97° 94° 92° 86° 82° 81° 78° 76°
Humidity 55% 59% 63% 68% 67% 75% 79% 79%
   
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Rain
 
7%
 
7%
 
7%
 
5%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm
Wind (mph) 10 WSW 9 SW 7 SW 6 SW 6 SSW 6 SSW 6 SSW 6 SSW
UV Index 3 2 1 0 0 0 0 0
Cloud Cover 30% 27% 26% 25% 11% 11% 11% 11%
Dew Point 72° 72° 72° 71° 69° 70° 69° 68°
Middle Grid line 95 F Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 90° 81° 100° (1953) 83°
Low 69° 60° 42° (1967) 68°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:21 AM with 13:08 of sunlight, then sets at 7:29 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:24 PM with 13:33 of moolight, then sets at 10:57 AM

Ottawa Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

September 1, 2015; 4:41 AM ET

Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. more >

Tue. Pollen

Tue. Dust & Dander

Tue. Wind Maps