Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
94°F
34°C
| Humidity | 58% |
| Wind Speed | S 8 mph |
| Barometer | 30.03 in (1016.4 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 109°F (43°C) |
| Last update | 18 Aug 12:53 pm CDT |
Extended Forecast for
Crystal City MO
Heat Advisory August 18, 01:47pm until August 18, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
This Afternoon
High: 99 °F
Slight Chance
T-stormsTonight
Low: 74 °F
Slight Chance
T-stormsTuesday
High: 96 °F
Slight Chance
T-stormsTuesday Night
Low: 72 °F
Chance
T-stormsWednesday
High: 90 °F
Chance
T-stormsWednesday Night
Low: 66 °F
Partly Cloudy
Thursday
High: 87 °F
Mostly Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 111. South wind 3 to 5 mph.
Tonight
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 74. Light and variable wind. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 107. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 85.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Crystal City MO
38.22°N 90.39°W (Elev. 446 ft)
38.22°N 90.39°W (Elev. 446 ft)
12:11 pm CDT Aug 18, 2025
1pm CDT Aug 18, 2025-6pm CDT Aug 24, 2025
Additional Resources
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