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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Partly Cloudy

89°F

32°C

Humidity 68%
Wind Speed S 16 mph
Barometer 29.91 in (1012.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 29 Jun 1:54 pm CDT
Extended Forecast for

Eureka IL

Heat Advisory June 29, 02:44pm until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 29, 02:44pm until July 3, 12:00am

    NOW until 12:00am Fri

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 75. South wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 93. Heat index values as high as 107. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 90. Heat index values as high as 103. South wind around 16 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 75. South wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 93. Heat index values as high as 107. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Clear, with a low around 74. South southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 93. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Clear, with a low around 75. South southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 93. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night
Partly cloudy, with a low around 72.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka IL
 40.71°N 89.27°W (Elev. 774 ft)
Last Update:
2:00 pm CDT Jun 29, 2026
Forecast Valid:
2pm CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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