Fred,
It will be a week or more before the air is back into the safe level. We are still getting some smoke from a couple of fires North West of us, but nothing at all compared to the last 5 1/2 weeks. They consider safe here as 14 PPm of whatever they measure and it has been over 320 for a long time. I think yesterday it had dropped all the way to just around 100 PPm. Heck, I could ever see the sun clearly. The mop up of hot spots around here will also continue to put some crap in the air for another few weeks, but this is like a vacation right now.
Edit To Add:
This picture is a little darker than most of the days were, but if I tried to use the flash it was like taking a flash through the window. The smoke wasn't quite that black, but the ash in it got all over my camera in jsut the few minutes I was trying to find where the sun was.
Ron