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.

Fair

78°F

26°C

Humidity 30%
Wind Speed NW 12 mph
Barometer 29.83 in (1010.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 7 Oct 3:52 pm CDT
Extended Forecast for

Algonquin IL

  • Tonight

    Tonight: Mostly clear, with a low around 49. Northwest wind around 5 mph, with gusts as high as 15 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Decreasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 71 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Northwest wind around 5 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 68. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 71. South wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Columbus Day
Mostly sunny, with a high near 75.
Monday Night
A chance of showers. Mostly cloudy, with a low around 48.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Algonquin IL
 42.19°N 88.27°W
Last Update:
1:20 pm CDT Oct 7, 2026
Forecast Valid:
4pm CDT Oct 7, 2026-6pm CDT Oct 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation