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 Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

82°F

28°C

Humidity	62%
Wind Speed	SW 3 mph
Barometer	30.05 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	85°F (29°C)
Last update	4 Aug 11:50 am CDT

More Information:

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

Extended Forecast for

3 Miles NNE Marine IL

This Afternoon
High: 86 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Wednesday
High: 89 °F
Sunny
Wednesday Night
Low: 70 °F
Chance
T-storms then
Showers
Likely
Thursday
High: 85 °F
Showers
Thursday Night
Low: 69 °F
Chance
T-storms
Friday
High: 85 °F
Partly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 69 °F
Chance
T-storms
Saturday
High: 87 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 86. Calm wind becoming southeast around 5 mph.

Tonight

Mostly clear, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.

Wednesday

Sunny, with a high near 89. Light south wind increasing to 5 to 9 mph in the morning.

Wednesday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 70. East wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 70%.

Thursday

Showers and possibly a thunderstorm before 1pm. High near 85. South wind 3 to 6 mph. Chance of precipitation is 80%.

Thursday Night

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

Friday

A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85.

Friday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

Saturday

Mostly sunny, with a high near 87.

Saturday Night

Mostly clear, with a low around 71.