Current conditions at
St. Louis Regional Airport (KALN)
Lat: 38.89°NLon: 90.03°WElev: 518ft.
Partly Cloudy
77°F
25°C
| Humidity | 65% |
| Wind Speed | NE 8 mph |
| Barometer | 30.02 in |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 22 Aug 5:50 pm CDT |
Extended Forecast for
3 Miles WNW Alton IL
Tonight
Low: 65 °F
Mostly Clear
Saturday
High: 86 °F
Partly Sunny
Saturday Night
Low: 58 °F
Decreasing
CloudsSunday
High: 78 °F
Sunny
Sunday Night
Low: 56 °F
Mostly Clear
Monday
High: 76 °F
Mostly Sunny
Monday Night
Low: 53 °F
Mostly Clear
Tuesday
High: 76 °F
Sunny
Tuesday Night
Low: 52 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 65. Light and variable wind.
Saturday
Partly sunny, with a high near 86. Calm wind becoming northwest 5 to 7 mph in the morning.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 58. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 78. Northwest wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 56. Northwest wind 3 to 8 mph.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Clear, with a low around 52.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 59.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles WNW Alton IL
38.93°N 90.19°W (Elev. 591 ft)
38.93°N 90.19°W (Elev. 591 ft)
5:46 pm CDT Aug 22, 2025
6pm CDT Aug 22, 2025-6pm CDT Aug 29, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
