• Early AM

    Apr 21

    Lo 50°

    Mostly cloudy

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

    Apr 21

    72°Lo 40°

    Couple of showers, t-storms

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

    Apr 22

    57°Lo 33°

    Cooler with clouds breaking

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

    Apr 23

    56°Lo 40°

    Partly sunny

    Moderate indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      26%
  • Thu

    Apr 24

    66°Lo 47°

    A couple of thunderstorms

    Moderate indoor dust & dander levels
    • Precip
      61%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      88%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Temp (°F) 42° 46° 50° 52° 54° 54° 56° 55°
RealFeel® 43° 49° 54° 56° 58° 58° 58° 55°
Humidity 64% 57% 51% 47% 44% 42% 42% 44%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
5%
 
5%
 
6%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 5 E 6 E 7 E 8 E 8 ESE 8 ESE 9 E 8 E
UV Index 2 4 5 6 7 6 5 4
Cloud Cover 10% 10% 8% 7% 10% 16% 26% 37%
Dew Point 31° 32° 33° 32° 32° 32° 34° 34°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 23

more Historical Weather Data >
  Today Normal Record 4/23/2013
High 56° 60° N/A 52°
Low 40° 37° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:00 AM with 13:44 of sunlight, then sets at 7:44 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:38 AM with 11:07 of moolight, then sets at 1:45 PM

Top Story

Crystal Lake Weather Report

Rain Coming to Chicago with Roller Coaster Temperatures

April 20, 2014; 8:10 PM ET

A showery pattern with up-and-down temperatures is coming this week to Chicago. more >

Is it a Cold or the Flu?

Apr 19, 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?

Wed. Dust & Dander

Wed. Wind Maps