Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

72°F

22°C

Humidity 66%
Wind Speed NE 7 mph
Barometer 30.23 in (1023.3 mb)
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 5 Aug 8:52 pm CDT
Extended Forecast for

Saint Charles IL

  • Tonight

    Tonight: Areas of smoke after 11pm. Patchy fog after 3am.  Otherwise, mostly clear, with a low around 63. East northeast wind around 5 mph becoming calm  after midnight. Winds could gust as high as 10 mph.

    Low: 63 °F

    Areas Smoke
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of smoke before 10am. Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. South southeast wind around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. South wind 5 to 10 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 70. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of smoke after 11pm. Patchy fog after 3am. Otherwise, mostly clear, with a low around 63. East northeast wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Wednesday
Areas of smoke before 10am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 67. South southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 88. South wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 70. South wind around 5 mph, with gusts as high as 10 mph.
Friday
Mostly sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 90.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.9°N 88.32°W
4:12 pm CDT Aug 5, 2025
9pm CDT Aug 5, 2025-6pm CDT Aug 12, 2025
 
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Additional Resources

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Hourly Weather Forecast

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