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

Hazardous Weather Conditions

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

87°F

31°C

Humidity 73%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 18 Aug 9:55 am CDT
Extended Forecast for

3 Miles NNW Marietta IL

Heat Advisory August 18, 10:05am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 10:05am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Today

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light south wind.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 88. Heat index values as high as 100. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 88 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. North wind 3 to 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 82. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 82 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. North northeast wind 3 to 8 mph. Winds could gust as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Northeast wind around 6 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 92. Heat index values as high as 106. South southwest wind around 7 mph.
Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light south wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 88. Heat index values as high as 100. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 68. North wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 82. North northeast wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 61. North northeast wind 3 to 8 mph. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 82. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Marietta IL
 40.55°N 90.4°W (Elev. 650 ft)
Last Update:
7:55 am CDT Aug 18, 2025
Forecast Valid:
10am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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