Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

75°F

24°C

Humidity 66%
Wind Speed NE 3 mph
Barometer 30.04 in (1016.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 24 Aug 7:53 pm CDT
Extended Forecast for

Fairview Heights IL

  • Tonight

    Tonight: A 30 percent chance of showers before 9pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 65. East wind 3 to 5 mph.

    Low: 65 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Southeast wind around 6 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 69. East wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 69. West wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 65. East wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 87. Southeast wind around 6 mph.
Tuesday Night
Increasing clouds, with a low around 69. East wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 69. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 90.
Saturday Night
A 20 percent chance of showers. Mostly clear, with a low around 71.
Sunday
Mostly sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
Mostly sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairview Heights IL
 38.59°N 90.01°W (Elev. 548 ft)
7:21 pm CDT Aug 24, 2026
8pm CDT Aug 24, 2026-6pm CDT Aug 31, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database