at your pictures, yours look a bit worse :)
in a broad sense, we dont have such dense fogs too frequently...
hmmm...
for the last two days the -15, -20C changed to +5C, and I am hearing the sound of rain and melting snow drops all of the time, hehe. streets have some devilish wet porridge instead of a decent snow.
Ommph I know that porridge snow, walk too fast then you might slip and do a backflip in the process. I guess the huge lake next to Chicago is good for generating tons of gloomy fog especially when the snow is all melting.