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. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

86°F

30°C

Humidity	53%
Wind Speed	SE 3 mph
Barometer	30.02 in (1016.2 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	4 Aug 12:53 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles WSW Smithton IL

This Afternoon
High: 87 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 70 °F
Chance
T-storms
Thursday
High: 86 °F
Showers
Likely
Thursday Night
Low: 69 °F
Slight Chance
T-storms then
Chance
T-storms
Friday
High: 86 °F
Chance
T-storms
Friday Night
Low: 69 °F
Chance
T-storms
Saturday
High: 88 °F
Slight Chance
T-storms

Detailed Forecast

This Afternoon

Sunny, with a high near 87. Calm wind becoming southeast around 5 mph.

Tonight

Mostly clear, with a low around 66. Southeast wind 3 to 5 mph.

Wednesday

Sunny, with a high near 90. Calm wind becoming south 5 to 8 mph in the morning.

Wednesday Night

A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly clear during the early evening, then becoming cloudy, with a low around 70. Southeast wind 5 to 7 mph becoming light and variable after midnight.

Thursday

Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 86. South wind 3 to 5 mph. Chance of precipitation is 70%.

Thursday Night

A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.

Friday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.

Friday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.

Saturday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88.

Saturday Night

Mostly clear, with a low around 71.