Dense Fog will last until later this Saturday morning over a good portion of the Chicago area

A Dense Fog Advisory (grey-shaded area on the headlined map) for visibility lower than a quarter mile will be in effect for a good portion of the Chicago area this Saturday morning. Visibility approaching or near zero will exist  in many areas (see current  visibility map below) until mid-morning, then fog will begin to lift, improving visibility significantly between 9 and 10AM CDT.

Latest visibility (in miles)…

Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.