• Tonight

    Sep 21

    Lo 41°

    Mainly clear and chilly

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Mon

    Sep 22

    67°Lo 46°

    Mostly sunny

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

    Sep 23

    72°Lo 49°

    Mostly sunny and pleasant

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

    Sep 24

    73°Lo 51°

    Sunny and pleasant

    Low ragweed pollen levels
    • Precip
      11%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      10%
    more
  • Thu

    Sep 25

    76°Lo 51°

    Mostly sunny and pleasant

    Ragweed Pollen Weather
    • Precip
      13%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      25%
    more
Next Previous
Hi 64° RealFeel® 59° Precipitation 35%

Day

N

E

S

W

  • NNW 14 mph
  • Gusts: 32 mph

Breezy and cooler with times of clouds and sun

  • Max UV Index: 2 (Low)
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 41° RealFeel® 39° Precipitation 25%

Night

N

E

S

W

  • NNW 5 mph
  • Gusts: 16 mph

Mainly clear and chilly

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Crystal Lake Pollen Levels - September 21

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 64° 70° N/A 60°
Low 41° 46° N/A 43°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:14 of sunlight, then sets at 6:53 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:11 AM with 13:19 of moolight, then sets at 5:30 PM

Top Story

Crystal Lake Weather Report

Drier Air Heads into Chicago Following Storms

September 21, 2014; 10:00 PM ET

After storms clipped Chicagoland early Sunday, drier air will filter into the area for the rest of the week. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps