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, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair with Haze

86°F

30°C

Humidity	55%
Wind Speed	S 6 mph
Barometer	30.03 in (1015.9 mb)
Dewpoint	68°F (20°C)
Visibility	6.00 mi
Heat Index	89°F (32°C)
Last update	4 Aug 11:54 am CDT

More Information:

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

Extended Forecast for

3 Miles WSW Old Monroe MO

Today
High: 89 °F
Sunny
Tonight
Low: 69 °F
Mostly Clear
Wednesday
High: 89 °F
Chance
T-storms
Wednesday Night
Low: 70 °F
T-storms
Likely then
Showers
Likely
Thursday
High: 86 °F
Showers
Likely
Thursday Night
Low: 69 °F
Partly Cloudy
then Slight
Chance
T-storms
Friday
High: 87 °F
Partly Sunny
Friday Night
Low: 70 °F
Chance
T-storms
Saturday
High: 90 °F
Mostly Sunny

Detailed Forecast

Today

Sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.

Tonight

Mostly clear, with a low around 69. Southeast wind 3 to 5 mph.

Wednesday

A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, then becoming cloudy during the afternoon, with a high near 89. Calm wind becoming south 5 to 9 mph in the morning.

Wednesday Night

Showers and thunderstorms likely, mainly before 10pm, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 70. East wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 70%.

Thursday

Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 86. Light south wind. Chance of precipitation is 70%.

Thursday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.

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 90.

Saturday Night

Mostly clear, with a low around 72.