There are always huge fires in Quebec and Northern Ontario during the summer, but this year is particularly bad because of drought conditions (GLOBAL WARMING!!). There are a series of fires that are completely out of control, they are not even fighting them, it would be a waste of time. The weather is supposed to shift, which will be bringing us here in Toronto (and in NE U.S.) more of the crappy air from Ohio, and less of the crappy air from Quebec. You can't win.

yours, Peter T.