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 Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

70°F

21°C

Humidity	94%
Wind Speed	NW 14 mph
Barometer	29.73 in
Dewpoint	68°F (20°C)
Visibility	4.00 mi
Last update	1 Aug 8:50 pm CDT

More Information:

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

Extended Forecast for

3 Miles ESE West Alton MO

Tonight
Low: 67 °F
Chance
T-storms then
Chance
Drizzle
Sunday
High: 82 °F
Partly Sunny
Sunday Night
Low: 66 °F
Mostly Clear
Monday
High: 85 °F
Mostly Sunny
Monday Night
Low: 66 °F
Mostly Clear
Tuesday
High: 86 °F
Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 88 °F
Mostly Sunny
Wednesday Night
Low: 70 °F
Partly Cloudy
then Chance
T-storms

Detailed Forecast

Tonight

A chance of drizzle and thunderstorms before 10pm, then a chance of drizzle, mainly between 10pm and 2am. Mostly cloudy, with a low around 67. North wind around 16 mph. Chance of precipitation is 20%.

Sunday

Partly sunny, with a high near 82. North wind around 17 mph, with gusts as high as 26 mph.

Sunday Night

Mostly clear, with a low around 66. North wind 6 to 11 mph becoming light after midnight.

Monday

Mostly sunny, with a high near 85. North wind 5 to 7 mph.

Monday Night

Mostly clear, with a low around 66. Northeast wind around 6 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 86.

Tuesday Night

Mostly clear, with a low around 68.