Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Partly Cloudy
90°F
32°C
| Humidity | 63% |
| Wind Speed | N 5 mph |
| Barometer | 30.01 in (1015.7 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 101°F (38°C) |
| Last update | 19 Aug 11:54 am CDT |
Extended Forecast for
3 Miles ESE Dow IL
This Afternoon
High: 91 °F
Slight Chance
T-stormsTonight
Low: 70 °F
Partly Cloudy
Wednesday
High: 85 °F
Mostly Sunny
Wednesday Night
Low: 64 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 85 °F
Sunny
Friday Night
Low: 65 °F
Mostly Clear
Saturday
High: 85 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 101. Northwest wind around 8 mph.
Tonight
Partly cloudy, with a low around 70. North wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 85. North wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 64. Northeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 83. Northeast wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 56.
Monday
Mostly sunny, with a high near 75.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles ESE Dow IL
39.04°N 90.27°W (Elev. 600 ft)
39.04°N 90.27°W (Elev. 600 ft)
12:01 pm CDT Aug 19, 2025
12pm CDT Aug 19, 2025-6pm CDT Aug 25, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
