Dirty December - the pig year started early

Yekaterinburg is incredibly dirty these days. The temperature went up from -25C to +5C and all the snow is melting fast. Everything is covered with dirt. I could never understand where all this dirt comes from. Yes, I know there are lots of construction sites in the city and the trucks mostly prefer not to clean their wheels, so they bring the dirt from there to the streets. But it can't be that much!

The cars are dirty, I have to periodically wash the windows and the lights or I can't see anything while driving. The people on the streets are dirty because it is not possible to keep clean while walking. Terrible! And this is December!

Hope it won't last too long, the winter should be back soon anyway and the snow will cover all the dirt.