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

88°F

31°C

Humidity	50%
Wind Speed	NA
Barometer	30.02 in (1016.1 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	91°F (33°C)
Last update	4 Aug 1:53 pm CDT

More Information:

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

Extended Forecast for

4 Miles S Waterloo 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
Thursday
High: 84 °F
T-storms
Thursday Night
Low: 69 °F
Chance
T-storms then
Showers
Likely
Friday
High: 85 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 68 °F
Chance
T-storms
Saturday
High: 88 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 86. Southeast wind 3 to 5 mph.

Tonight

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

Wednesday

Sunny, with a high near 89. South wind 3 to 8 mph.

Wednesday Night

A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. Southeast wind 3 to 7 mph.

Thursday

Showers and thunderstorms, mainly before 1pm. High near 84. North wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 80%.

Thursday Night

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Friday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

Friday Night

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

Saturday

Mostly sunny, with a high near 88.

Saturday Night

Mostly clear, with a low around 71.

Sunday

Sunny, with a high near 90.

Sunday Night

Mostly clear, with a low around 73.