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Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
75°F
24°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 29.92 in (1012.6 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 8.00 mi |
| Last update | 26 Jul 4:53 am CDT |
Extended Forecast for
Cahokia IL
Extreme Heat Warning July 26, 11:00am until July 27, 09:00pm
Today
High: 99 °F
Slight Chance
T-storms and
Patchy FogTonight
Low: 79 °F
Partly Cloudy
Monday
High: 100 °F
Hot
Monday Night
Low: 80 °F
Mostly Clear
Tuesday
High: 95 °F
Mostly Sunny
Tuesday Night
Low: 73 °F
Partly Cloudy
Wednesday
High: 91 °F
Sunny
Wednesday Night
Low: 69 °F
Mostly Clear
Thursday
High: 91 °F
Mostly Sunny
Detailed Forecast
Today
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 99. Heat index values as high as 118. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 79. Light and variable wind.
Monday
Sunny and hot, with a high near 100. Heat index values as high as 114. Light southwest wind increasing to 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 80. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 95. Northwest wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 71.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Cahokia IL
38.57°N 90.18°W (Elev. 407 ft)
38.57°N 90.18°W (Elev. 407 ft)
4:51 am CDT Jul 26, 2026
5am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
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