National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

70°F

21°C

Humidity 87%
Wind Speed N 18 G 25 mph
Barometer 29.74 in (1006.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 2 Aug 1:53 am CDT
Extended Forecast for

Alorton IL

  • Overnight

    Overnight: Drizzle likely, mainly before 4am. Cloudy, with a low around 68. North wind around 14 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Drizzle
    Likely

  • Sunday

    Sunday: A chance of drizzle, mainly before 7am. Partly sunny, with a high near 83. North wind around 14 mph, with gusts as high as 22 mph.

    High: 83 °F

    Chance
    Drizzle then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. North wind 5 to 9 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 86. Calm wind becoming north around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 65. Northeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Overnight
Drizzle likely, mainly before 4am. Cloudy, with a low around 68. North wind around 14 mph, with gusts as high as 21 mph.
Sunday
A chance of drizzle, mainly before 7am. Partly sunny, with a high near 83. North wind around 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 66. North wind 5 to 9 mph becoming calm in the evening.
Monday
Sunny, with a high near 86. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Clear, with a low around 65. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 91.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Thursday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alorton IL
 38.57°N 90.12°W (Elev. 413 ft)
Last Update:
1:26 am CDT Aug 2, 2026
Forecast Valid:
2am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation