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Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Overcast
72°F
22°C
| Humidity | 91% |
| Wind Speed | E 5 mph |
| Barometer | 30.02 in (1016.2 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 25 Jul 8:54 am CDT |
Extended Forecast for
3 Miles SW Hardin IL
Heat Advisory July 26, 11:00am until July 27, 09:00pm
Today

High: 88 °F
Scattered
ShowersTonight

Low: 72 °F
Partly Cloudy
Sunday

High: 94 °F
Mostly Sunny
Sunday Night

Low: 76 °F
Partly Cloudy
Monday

High: 98 °F
Hot
Monday Night

Low: 77 °F
Mostly Clear
Tuesday

High: 93 °F
Sunny
Tuesday Night

Low: 71 °F
Partly Cloudy
Wednesday

High: 91 °F
Sunny
Detailed Forecast
Today
Scattered showers and thunderstorms before noon, then isolated showers between noon and 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 72. Calm wind.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 109. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 76. Light south wind.
Monday
Sunny and hot, with a high near 98. Southwest wind 5 to 9 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles SW Hardin IL
39.12°N 90.67°W (Elev. 525 ft)
39.12°N 90.67°W (Elev. 525 ft)
8:31 am CDT Jul 25, 2026
9am CDT Jul 25, 2026-6pm CDT Jul 31, 2026



