Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
80°F
27°C
| Humidity | 74% |
| Wind Speed | Calm |
| Barometer | 30.02 in (1016.0 mb) |
| Dewpoint | 71°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 14 Aug 9:53 am CDT |
Extended Forecast for
Waterloo IL
Today
High: 88 °F
Sunny
Tonight
Low: 70 °F
Mostly Clear
Friday
High: 93 °F
Sunny
Friday Night
Low: 72 °F
Mostly Clear
Saturday
High: 96 °F
Sunny
Saturday Night
Low: 73 °F
Mostly Clear
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 96 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 88. Light southeast wind.
Tonight
Mostly clear, with a low around 70. Southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 93. Heat index values as high as 100. South wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 72. Light southeast wind.
Saturday
Sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Waterloo IL
38.33°N 90.16°W (Elev. 600 ft)
38.33°N 90.16°W (Elev. 600 ft)
10:41 am CDT Aug 14, 2025
10am CDT Aug 14, 2025-6pm CDT Aug 20, 2025
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