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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

99°F

37°C

Humidity 39%
Wind Speed W 9 mph
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 4 Sep 1:52 pm CDT
Extended Forecast for

3 Miles NNE Pomona IL

Extreme Heat Warning September 4, 02:34pm until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 02:34pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Northeast wind 5 to 8 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. East northeast wind 3 to 7 mph.

    Low: 67 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 92. East northeast wind 3 to 5 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A slight chance of showers, with thunderstorms also possible after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 110. Light south southwest wind. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 75. Calm wind.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. Calm wind.
Sunday
Sunny, with a high near 95. Northeast wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 67. East northeast wind 3 to 7 mph.
Labor Day
Sunny, with a high near 92. East northeast wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 67. Light east wind.
Tuesday
Sunny, with a high near 96. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 73. South southeast wind 3 to 8 mph.
Wednesday
Sunny and hot, with a high near 99. Southwest wind around 9 mph.
Wednesday Night
Mostly clear, with a low around 74. South southwest wind around 6 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 94. West southwest wind 5 to 7 mph becoming northwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Pomona IL
 37.68°N 89.32°W
Last Update:
1:26 pm CDT Sep 4, 2026
Forecast Valid:
2pm CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
Forecast Discussion
 
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Additional Resources

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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