I certainly hope this isn't a yearly thing, but if it is:

From a recent transplant from California:

If you have central air, turn on your fan to "always on" during high smoke days.

If you don't, or that's not enough, look into building a Corsi Rosenthal box https://en.m.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box

They're really good at cleaning up internal air quality.

For real. I normally want to stay inside all the time, but with the haze, I really wanted to stay inside all the time.

That and it was much worse in other places, and of course wildfires are quite concerning as far as their environmental impact. I'm hoping that's the last of them for a while, but I expect that it isn't.