Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

83°F

28°C

Humidity 61%
Wind Speed SW 6 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 68°F (20°C)
Visibility NA
Heat Index86°F (30°C)
Last update 4 Aug 11:54 am CDT
Extended Forecast for

4 Miles WSW Godfrey IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Light and variable wind becoming southeast around 6 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. Southeast wind 3 to 6 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 3pm.  Sunny, with a high near 90. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am.  Low around 71. Southeast wind 5 to 8 mph becoming southwest after midnight.  Chance of precipitation is 80%.

    Low: 71 °F

    T-storms
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm.  Mostly cloudy, with a high near 86. South wind around 6 mph.  Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Light and variable wind becoming southeast around 6 mph.
Tonight
Mostly clear, with a low around 69. Southeast wind 3 to 6 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 90. Light southeast wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 71. Southeast wind 5 to 8 mph becoming southwest after midnight. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 86. South wind around 6 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70.
Friday
Partly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 75.
Monday
Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Godfrey IL
 38.93°N 90.25°W (Elev. 531 ft)
11:41 am CDT Aug 4, 2026
12pm CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database