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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

73°F

23°C

Humidity 81%
Wind Speed NW 12 mph
Barometer 29.68 in (1004.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 1 Aug 12:51 pm CDT
Extended Forecast for

2 Miles SSW Riverview MO

  • This Afternoon

    This Afternoon: Drizzle, mainly after 4pm. Patchy fog between 4pm and 5pm. Otherwise, cloudy, with a high near 74. Northwest wind around 9 mph.

    High: 74 °F

    Drizzle and
    Patchy Fog

  • Tonight

    Tonight: Drizzle and possibly a thunderstorm before 8pm, then areas of drizzle and thunderstorms between 8pm and 11pm, then areas of drizzle after 11pm. Patchy fog before 7pm. Otherwise, cloudy, with a low around 68. North wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 68 °F

    T-storms and
    Patchy Fog
    then Areas
    Drizzle

  • Sunday

    Sunday: Patchy drizzle before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 81. North wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Patchy
    Drizzle then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. North wind 5 to 10 mph becoming light after midnight.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. North wind 3 to 6 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

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

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Drizzle, mainly after 4pm. Patchy fog between 4pm and 5pm. Otherwise, cloudy, with a high near 74. Northwest wind around 9 mph.
Tonight
Drizzle and possibly a thunderstorm before 8pm, then areas of drizzle and thunderstorms between 8pm and 11pm, then areas of drizzle after 11pm. Patchy fog before 7pm. Otherwise, cloudy, with a low around 68. North wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday
Patchy drizzle before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 81. North wind 13 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 67. North wind 5 to 10 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 84. North wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Riverview MO
 38.73°N 90.23°W (Elev. 453 ft)
Last Update:
1:26 pm CDT Aug 1, 2026
Forecast Valid:
1pm CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation