• Tonight

    Sep 18

    Lo 49°

    Clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Fri

    Sep 19

    74°Lo 60°

    Breezy with periods of sun

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

    Sep 20

    79°Lo 57°

    A few strong p.m. t-storms

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

    Sep 21

    71°Lo 47°

    Partly sunny and less humid

    Moderate ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      46%
    more
  • Mon

    Sep 22

    69°Lo 49°

    Times of sun and clouds

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      50%
    more
Next Previous
Clear 58° Lo 52° RealFeel® 54° / 50°

N

E

S

W

  • Precipitation: 0%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 86%
  • Cloud Cover: 15%
  • Dew Point: 51° F
  • Visibility: 10 mi
5 mph

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 69° 74° N/A 80°
Low 49° 54° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 12:22 of sunlight, then sets at 6:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:24 AM with 14:28 of moolight, then sets at 3:52 PM

Top Story

Algonquin Weather Report

Chicago: Chance of Interrupting Thunderstorms for Weekend

September 18, 2014; 9:15 PM ET

Chicago is facing a mostly clear weekend with the threat of some disruptive thunderstorms on Saturday. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps