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

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Clear

77°F

25°C

Humidity 44%
Wind Speed NW 8 mph
Barometer 30.10 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Aug 11:52 am CDT
Extended Forecast for

Algonquin IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 76. West northwest wind around 5 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. East wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Calm wind becoming south southwest around 5 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. South southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 82. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 76. West northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 56. East wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 79. Calm wind becoming south southwest around 5 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 62. South southwest wind around 5 mph, with gusts as high as 10 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 82. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Algonquin IL
 42.17°N 88.3°W
Last Update:
12:10 pm CDT Aug 24, 2026
Forecast Valid:
12pm CDT Aug 24, 2026-6pm CDT Aug 30, 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