Dense fog arrives to St. Louis area – What to know

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ST. LOUIS – Foggy conditions have made for some tough commutes around the St. Louis area Wednesday morning.

Wet weather over the last several days has set the stage for Wednesday’s fog. Monday started off with freezing rain and icy conditions. We’ve had several instances of rainfall over the last few days as well, including a storm system that brought three-tenths to have an inch of rain to much of the St. Louis region overnight.

St. Louis radar: See a map of current weather here

With all of that water and saturated air comes melting and fogging. There’s nowhere for this moisture to go, and it’s led to some thick fog Wednesday morning.

As of 9 a.m. Wednesday, visibility numbers are some of the lowest we’ve seen in months in the St. Louis area.

In the City of St. Louis, visibility is around a tenth of a mile. Visibility is less than a mile for many other nearby counties dealing with fog. The fog has made for some particularly dreary views near the St. Louis Lambert International Airport.

There’s a deep fog advisory in effect through noon for St. Louis and dozens of counties in the bi-state area. Drivers need to be ready for challenging views and make sure to give themselves extra time for a safe commute. Visibility conditions should improve by the afternoon hours.


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