• Today

    Sep 1

    85°Lo 71°

    A thunderstorm in spots

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

    Sep 2

    91°Lo 71°

    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

    90°Lo 69°

    Warm and humid with some sun

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

    Sep 4

    89°Lo 68°

    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

    87°Lo 65°

    Sunny, 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
2pm
3pm 4pm 5pm 6pm 7pm 8pm 9pm
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Forecast
Hazy
T-storms
Hazy
Hazy
Hazy
Hazy
Mostly Clear
Mostly Clear
Temp (°F) 84° 85° 87° 86° 84° 83° 80° 79°
RealFeel® 92° 91° 93° 92° 90° 87° 83° 82°
Humidity 64% 65% 60% 63% 66% 67% 71% 76%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Rain
 
43%
 
51%
 
47%
 
34%
 
34%
 
22%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm
Wind (mph) 8 SW 9 SW 9 SW 8 SW 7 SW 6 SSW 6 SSW 6 SSW
UV Index 5 4 3 2 1 0 0 0
Cloud Cover 31% 31% 31% 31% 31% 31% 18% 10%
Dew Point 70° 73° 71° 72° 72° 71° 70° 71°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 85° 81° N/A N/A
Low 71° 58° N/A N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 13:07 of sunlight, then sets at 7:30 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:25 PM with 13:33 of moolight, then sets at 10:58 AM

Peru 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