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

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

80°F

27°C

Humidity 49%
Wind Speed E 5 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 28 Aug 4:52 pm CDT
Extended Forecast for

Prospect Heights IL

  • Tonight

    Tonight: Partly cloudy, with a low around 63. East wind around 5 mph becoming south southwest in the evening.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 80. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 80 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. East wind around 5 mph becoming south southwest in the evening.
Saturday
Increasing clouds, with a high near 80. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South southwest wind around 10 mph, with gusts as high as 15 mph.
Monday
Partly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
A chance of showers. Partly cloudy, with a low around 71.
Friday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Prospect Heights IL
 42.11°N 87.92°W
Last Update:
3:46 pm CDT Aug 28, 2026
Forecast Valid:
5pm CDT Aug 28, 2026-6pm CDT Sep 4, 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