Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

81°F

27°C

Humidity 62%
Wind Speed W 5 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 21 Aug 7:53 pm CDT
Extended Forecast for

3 Miles WSW Fairview Heights IL

  • Tonight

    Tonight: Mostly clear, with a low around 71. Light and variable wind.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. North wind 5 to 9 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. North wind around 6 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. North wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 71. Light and variable wind.
Saturday
Sunny, with a high near 88. North wind 5 to 9 mph.
Saturday Night
Mostly clear, with a low around 65. North wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 84. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 83.
Monday Night
Mostly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Partly sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 69.
Friday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Fairview Heights IL
 38.59°N 90.06°W (Elev. 423 ft)
5:51 pm CDT Aug 21, 2026
8pm CDT Aug 21, 2026-6pm CDT Aug 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database