• Tonight

    Sep 1

    Lo 69°

    Mainly clear, warm; fog late

    Ragweed Pollen Weather
    • Grass
      Pollen
      N/A
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    Sep 2

    90°Lo 69°

    Fog in the a.m.; partly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      N/A
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Thu

    Sep 3

    87°Lo 67°

    Partly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      N/A
    • 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
      N/A
    • 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
      N/A
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Temp (°F) 74° 73° 73° 72° 71° 71° 69° 70°
RealFeel® 76° 75° 74° 73° 73° 72° 69° 71°
Humidity 83% 84% 84% 86% 87% 88% 91% 87%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
0%
 
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0%
Snow
 
0%
 
0%
 
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Ice
 
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  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 6 S 6 S 6 SSW 5 SSW 5 SW 5 SW 5 SW 4 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 11% 11% 11% 11% 11% 11% 14% 19%
Dew Point 69° 68° 67° 68° 67° 67° 66° 66°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 2

more Historical Weather Data >
  Today Normal Record 9/2/2014
High 90° 81° 101° (1953) 83°
Low 69° 60° 40° (1946) 62°

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 10:04 PM with 14:01 of moolight, then sets at 12:05 PM

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 >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps