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

Hazardous Weather Conditions

Current conditions at

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Fair

93°F

34°C

Humidity 52%
Wind Speed SW 6 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 1 Sep 5:54 pm CDT
Extended Forecast for

Eureka IL

Heat Advisory September 1, 05:58pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 05:58pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Tonight

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 104. Southwest wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southwest wind around 7 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95. Heat index values as high as 103. Southwest wind 6 to 8 mph.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93. Southwest wind 3 to 6 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 75. South southwest wind 3 to 6 mph.
Wednesday
Sunny and hot, with a high near 96. Heat index values as high as 104. Southwest wind 7 to 9 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 76. South southwest wind around 7 mph.
Thursday
Sunny and hot, with a high near 95. Heat index values as high as 103. Southwest wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 75. Calm wind becoming south southwest around 5 mph after midnight.
Friday
Sunny, with a high near 93. Southwest wind 3 to 6 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72. Calm wind.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 67.
Labor Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka IL
 40.71°N 89.27°W (Elev. 774 ft)
Last Update:
5:36 pm CDT Sep 1, 2026
Forecast Valid:
5pm CDT Sep 1, 2026-6pm CDT Sep 8, 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