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.

Mostly Cloudy

70°F

21°C

Humidity 97%
Wind Speed E 6 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 69°F (21°C)
Visibility 9.00 mi
Last update 28 Jun 2:54 am CDT
Extended Forecast for

Eureka IL

Heat Advisory June 29, 11:00am until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 67. East wind around 6 mph.

    Low: 67 °F

    Patchy Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. South southeast wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 87 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. South wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 92 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 75. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 67. East wind around 6 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. South southeast wind 5 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 75. South wind 8 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 9 to 16 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 94. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 75. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Clear, with a low around 75.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 74.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 72.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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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:
2:36 am CDT Jun 28, 2026
Forecast Valid:
3am CDT Jun 28, 2026-6pm CDT Jul 4, 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