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 Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

88°F

31°C

Humidity	46%
Wind Speed	Vrbl 3 mph
Barometer	30.02 in (1015.5 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	4 Aug 1:51 pm CDT

More Information:

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

Extended Forecast for

Sycamore Hills MO

This Afternoon
High: 89 °F
Sunny
Tonight
Low: 71 °F
Mostly Clear
Wednesday
High: 91 °F
Sunny then
Slight Chance
T-storms
Wednesday Night
Low: 72 °F
T-storms
Likely
Thursday
High: 85 °F
T-storms then
Chance
T-storms
Thursday Night
Low: 72 °F
Chance
T-storms
Friday
High: 87 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 72 °F
Chance
T-storms
Saturday
High: 90 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 89. Southeast wind 3 to 6 mph.

Tonight

Mostly clear, with a low around 71. Southeast wind 5 to 7 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 91. South wind 5 to 9 mph.

Wednesday Night

Showers and thunderstorms likely, mainly after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 72. Southeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 60%.

Thursday

Showers and thunderstorms, mainly before 10am. High near 85. North wind around 6 mph becoming south in the morning. Chance of precipitation is 80%.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

Friday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

Friday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

Saturday

Mostly sunny, with a high near 90.

Saturday Night

Mostly clear, with a low around 74.