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

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

78°F

26°C

Humidity 90%
Wind Speed S 14 G 21 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 75°F (24°C)
Visibility 8.00 mi
Heat Index80°F (27°C)
Last update 29 Jun 6:52 am CDT
Extended Forecast for

Saint Charles IL

Heat Advisory June 29, 12:00pm until July 1, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 94. Heat index values as high as 104. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Heat index values as high as 107. Southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: A chance of showers after 1am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 94. Heat index values as high as 104. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 76. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny and hot, with a high near 95. Heat index values as high as 107. Southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 76. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday
Sunny and hot, with a high near 95. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
A chance of showers after 1am. Partly cloudy, with a low around 76.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.93°N 88.32°W
Last Update:
3:56 am CDT Jun 29, 2026
Forecast Valid:
6am CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
Forecast Discussion
 
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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