Monitoring Tsunami Impacts Across the Pacific; Air Quality Concerns; Dangerous Heat; Critical Fire Weather for the West

Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

91°F

33°C

Humidity 56%
Wind Speed N 5 mph
Barometer 29.97 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 30 Jul 5:45 pm CDT
Extended Forecast for

Benton IL

Extreme Heat Warning July 30, 05:53pm until July 30, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 05:53pm until July 30, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • This Afternoon

    High: 96 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 10am.  Partly sunny, with a high near 86. Light north wind increasing to 6 to 11 mph in the morning.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 67. North northeast wind 8 to 10 mph.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 83. North northeast wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North northeast wind 6 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Northeast wind 7 to 11 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Northeast wind 3 to 8 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 106. Light east southeast wind.
Tonight
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Light and variable wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 86. Light north wind increasing to 6 to 11 mph in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. North northeast wind 8 to 10 mph.
Friday
Mostly sunny, with a high near 83. North northeast wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 62. North northeast wind 6 to 10 mph.
Saturday
Mostly sunny, with a high near 82. Northeast wind 7 to 11 mph.
Saturday Night
Mostly clear, with a low around 61. Northeast wind 3 to 8 mph.
Sunday
Sunny, with a high near 85. East northeast wind 5 to 7 mph.
Sunday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 66. East northeast wind around 6 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 69. East wind around 6 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south 5 to 7 mph in the morning.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Benton IL
 38°N 88.93°W
4:31 pm CDT Jul 30, 2025
5pm CDT Jul 30, 2025-6pm CDT Aug 6, 2025
 
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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