• Early AM

    May 4

    Lo 59°

    A couple of showers and thunderstorms

    Asthma Weather
    • Hi
      RealFeel
      76°
    • UV
      5 - Moderate
    • Air Qual.
      Good
    more
  • Today

    May 4

    69°Lo 50°

    A couple of thunderstorms

    At High Risk weather for asthma
    • Hi
      RealFeel
      70°
    • UV
      3 - Moderate
    • Air Qual.
      Moderate
    more
  • Tue

    May 5

    62°Lo 51°

    Cloudy, a couple of t-storms

    Neutral weather for asthma
    • Hi
      RealFeel
      64°
    • UV
      3 - Moderate
    • Air Qual.
      Good
  • Wed

    May 6

    76°Lo 58°

    Warmer with a shower or two

    Neutral weather for asthma
    • Hi
      RealFeel
      81°
    • UV
      7 - High
    • Cloud
      Cover
      36%
    more
  • Thu

    May 7

    80°Lo 63°

    Warm with lots of sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      82°
    • UV
      7 - High
    • Cloud
      Cover
      21%
    more
Next Previous
Hi 62° RealFeel® 64° Precipitation 60%

Day

N

E

S

W

  • ENE 9 mph
  • Gusts: 14 mph

Cloudy with a couple of showers and a thunderstorm

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 51° RealFeel® 45° Precipitation 61%

Night

N

E

S

W

  • SE 8 mph
  • Gusts: 14 mph

Partly cloudy with a couple of showers and a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 40%
  • Precipitation: 0.29 in
  • Rain: 0.29 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs

Temperature History - May 5

more Historical Weather Data >
  Today Normal Record 5/5/2014
High 62° 64° N/A 55°
Low 51° 41° N/A 40°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:11 of sunlight, then sets at 7:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:35 PM with 10:20 of moolight, then sets at 6:55 AM

Crystal Lake Weather Report

Chicago: Temperature Roller Coaster in Store for New Week

May 4, 2015; 12:07 AM ET

The month of May has opened the door for warm air to flow into the Chicago area following a cool end to April. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Tue. Air Quality

Tue. Asthma Risk

Tue. UV Index