• Today

    Sep 18

    71°Lo 49°

    Partly sunny and pleasant

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

    Sep 19

    75°Lo 60°

    Intervals of clouds and sun

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

    Sep 20

    79°Lo 59°

    Warmer; an afternoon t-storm

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

    Sep 21

    74°Lo 51°

    Clouds breaking; less humid

    Low ragweed pollen levels
    • Precip
      11%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      51%
  • Mon

    Sep 22

    70°Lo 49°

    Partly sunny

    Ragweed Pollen Weather
    • Precip
      3%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      26%
    more
Next Previous
Hi 74° RealFeel® 73° Precipitation 11%

Day

N

E

S

W

  • NNW 9 mph
  • Gusts: 15 mph

Clouds giving way to some sun and less humid

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 51° RealFeel® 47° Precipitation 7%

Night

N

E

S

W

  • NNW 6 mph
  • Gusts: 10 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 74° 75° 89° (2007) 69°
Low 51° 50° 34° (1991) 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:43 AM with 12:13 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:16 AM with 13:17 of moolight, then sets at 5:33 PM

Top Story

Peru Weather Report

Chicago: Cooler, Fall-Like Temperatures to Linger

September 18, 2014; 6:12 AM ET

The cooler, below-average conditions responsible for the fall-like feel will hold through the end of the week over the Chicago area. more >

Sun. Dust & Dander

Sun. Wind Maps