I’ve been meaning to write this post myself. Thanks for putting it out there. I will share some personal observations, but am mostly here to see if people smarter than me have any advice. I live in Albuquerque, New Mexico. I’d say we have some form of smoke about 70% of summer days. It comes in two forms – light smoke from far off fires or choking smoke from local fires. When it is very thick, I suck it up and hit the treadmill. In both cases, I have found that the smoke tends to somewhat dissipate in the afternoon due to local weather conditions. Have you noticed that conditions are better during a certain time of day where you live? If so, you could try to plan to run when conditions are somewhat better.
I’d mostly be interested in knowing about the known long terms impacts of exercising in smoky conditions. New Mexico is my home, and I do not intend to leave. Sadly, the smoke gets worse every year. If I want to live a fit life, I will need to find a way to live with it.