Watch: Toronto and New York City are shrouded in smog caused by hundreds of wild fires
A huge pall of smoke from wildfires in the Canadian province of Quebec brought choking smog to North American cities as far apart as Toronto, New York and Washington DC.
Tomas Kauer - Moderator 
A huge pall of smoke from wildfires in the Canadian province of Quebec brought choking smog to North American cities as far apart as Toronto, New York and Washington DC.
