The smoke from the Fires in the West now covers most of the U.S. and Canada

 https://fire.airnow.gov/

If you use the above URL you can see for yourself. It's an amazing sight simply because most of it would be in Europe or Asia now in other years with different wind patterns. But, this year it mostly seems to be staying over the U.S. , Canada and Mexico which is freaking out Canadians because they are worrying about having enough oxygen to breathe in forests this winter.