Could it be some shitheads from ELF (Earth Liberation Front) doing it? If so having all of that smoke (especially from buildings) released into the atmosphere isn't gonna help the planet.
On a similar note farmers are allready starting to burn off their pastures here. And despite warnings, over the last 3 days people have started them, while the wind was blowing at over 20MPH. Needless to say the area fire departments were getting run ragged. And some buildings were destroyed by them also. This will continue until arround mid March here.