• Tonight

    Sep 1

    Lo 69°

    Mainly clear, warm; fog late

    Ragweed Pollen Weather
    • 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
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Hazy
Temp (°F) 73° 76° 80° 84° 87° 88° 89° 89°
RealFeel® 77° 81° 88° 94° 94° 96° 97° 98°
Humidity 88% 78% 72% 67% 59% 56% 54% 58%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (mph) 4 WSW 5 SW 6 WSW 6 WSW 8 SW 9 SW 10 SSW 10 WSW
UV Index 1 1 3 3 3 5 6 5
Cloud Cover 54% 67% 58% 73% 85% 62% 29% 29%
Dew Point 69° 69° 71° 72° 71° 71° 70° 73°
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; 5:41 PM 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