• Tonight

    Apr 17

    Lo 39°

    Considerable cloudiness

    Dust & Dander Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Fri

    Apr 18

    55°Lo 33°

    Partly sunny

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sat

    Apr 19

    67°Lo 46°

    Partly sunny

    Moderate indoor dust & dander levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Sun

    Apr 20

    70°Lo 51°

    Mostly cloudy with a shower

    Low indoor dust & dander levels
    • Precip
      55%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      77%
    more
  • Mon

    Apr 21

    68°Lo 55°

    Mostly cloudy, showers around

    Low indoor dust & dander levels
    • Precip
      70%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      76%
    more
Next Previous
Hi 58° RealFeel® 56° Precipitation 35%

Day

N

E

S

W

  • SW 12 mph
  • Gusts: 28 mph

Milder with increasing cloudiness

  • Max UV Index: 6 (High)
  • 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 39° RealFeel® 36° Precipitation 11%

Night

N

E

S

W

  • N 5 mph
  • Gusts: 10 mph

Considerable cloudiness

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • 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 - April 17

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Apr 17

more Historical Weather Data >
  Today Normal Record 4/17/2013
High 58° 57° N/A 41°
Low 39° 35° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 13:27 of sunlight, then sets at 7:37 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:24 PM with 10:03 of moolight, then sets at 8:27 AM

Top Story

Crystal Lake Weather Report

Chicago: Weekend Warmth on the Way

April 17, 2014; 5:44 PM ET

Despite a chilly Friday, seasonal warmth will return to the city right in time for the holiday weekend. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps