National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

82°F

28°C

Humidity 77%
Wind Speed SW 6 mph
Barometer 29.93 in (1012.2 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Sep 12:53 am CDT
Extended Forecast for

Blue Island IL

Extreme Heat Warning until September 3, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until September 3, 07:00pm

    NOW until 7:00pm Thu

    Extreme Heat Warning

  • Overnight

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 5 to 10 mph becoming west northwest in the afternoon.

    High: 97 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 72. East southeast wind 5 to 10 mph becoming south after midnight.

    Low: 72 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradual clearing during the afternoon, with a high near 92. Heat index values as high as 100. Northeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 92 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. North northeast wind around 5 mph becoming south in the evening.

    Low: 74 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 72. East southeast wind 5 to 10 mph becoming south after midnight.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradual clearing during the afternoon, with a high near 92. Heat index values as high as 100. Northeast wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. North northeast wind around 5 mph becoming south in the evening.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
A chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Blue Island IL
 41.66°N 87.69°W
Last Update:
1:20 am CDT Sep 3, 2026
Forecast Valid:
1am CDT Sep 3, 2026-6pm CDT Sep 9, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation