It has been pretty bad here in Michigan. Like a heavy smelly fog all day and night. Thick enough to look directly at the sun even. Going outside and not knowing about it would make you think someone was burning a dozen brush heaps next door.
As a Canuck, let me say sorry for having so many trees and not enough firefighters, for a second year in a row... at least we have to huff this stuff in before it gets to you, right?