• Clear 64°
    Asthma Current Weather
    • Relative Humidity
      86%
    • Yesterday
      Temp
      65°
    • Pressure
      30.04 inHg
  • Tonight

    Aug 30

    Lo 59°

    Clear; areas of fog late

    Asthma Weather
    • Hi
      RealFeel
      82°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    Day Details >
  • Tomorrow

    Aug 31

    Hi 85°

    Sunny, very warm and humid

    Beneficial weather for asthma
    • Hi
      RealFeel
      91°
    • UV
      5 - High
    • Air Qual.
      Moderate
    Day Details >
  • Tuesday

    Sep 1

    Hi 87°

    Mostly sunny, warm and humid

    Beneficial weather for asthma
    • Hi
      RealFeel
      93°
    • UV
      5 - High
    • Air Qual.
      Moderate
    Day Details >
Next

Humid tomorrow to Tuesday

8/30 8/31 Now: 11:51pm
PM 11-3
  • 11pm Mostly clear 64° 0%
  • 12am Clear 64° 0%
  • 1am Clear 63° 0%
  • 2am Clear 62° 0%
  • 3am Clear 61° 0%
AM 10-3
  • 10am Sunny 74° 0%
  • 11am Sunny 78° 0%
  • 12pm Sunny 80° 0%
  • 1pm Mostly sunny 82° 0%
  • 2pm Mostly sunny 83° 0%
  • 3pm Mostly sunny 85° 0%
PM 4-9
  • 4pm Mostly sunny 84° 0%
  • 5pm Sunny 83° 0%
  • 6pm Sunny 82° 0%
  • 7pm Sunny 79° 0%
  • 8pm Mostly clear 76° 0%
  • 9pm Mostly clear 74° 0%
Hourly Forecast >
Aug 30, 2015; 4:30 PM ET
Five-day Weather Forecast for Chicago, IL
Chicago, IL Weather Forecast

Crystal Lake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 30, 2015; 8:00 PM ET

A turn to warmer conditions is in store for the Chicago area heading into the new week. more >

Respiratory Health Live Feed

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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.

Sun. Air Quality

Sun. Asthma Risk

Sun. UV Index