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Hazardous Weather Conditions

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Overcast

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 25 Jul 3:35 am CDT
Extended Forecast for

Marietta IL

Heat Advisory July 26, 12:00pm until July 27, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 66. South wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 86. South wind 3 to 5 mph.

    High: 86 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Light and variable wind becoming south around 5 mph after midnight.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 93. Heat index values as high as 109. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 93 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. Calm wind becoming southwest around 5 mph after midnight. Winds could gust as high as 16 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 96. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. West wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Cloudy, with a low around 66. South wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 86. South wind 3 to 5 mph.
Saturday Night
Partly cloudy, with a low around 71. Light and variable wind becoming south around 5 mph after midnight.
Sunday
Partly sunny, with a high near 93. Heat index values as high as 109. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 75. Calm wind becoming southwest around 5 mph after midnight. Winds could gust as high as 16 mph.
Monday
Sunny and hot, with a high near 96. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 74. West wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 68.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marietta IL
 40.5°N 90.41°W (Elev. 650 ft)
Last Update:
3:16 am CDT Jul 25, 2026
Forecast Valid:
3am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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