> Do you act on this information? Is there really much you can do to mitigate the effects?

Couldn't you run a HEPA filter to reduce the particulates?

https://phys.org/news/2018-09-indoor-hepa-filters-significan...

For me just running an evaporative cooler roughly halves the counts, but that's from over 100 to about 50 so it's a kinda of a mixed blessing. But since my rented house isn't airtight or even close to it, there's not a lot I can do other than move.

Personally I have a PurpleAir II filter (as mentioned in a different part of this thread.) I also turn wood in an indoor environment, and run a HEPA filter which reduces the PM2.5 in the air drastically, and quickly.

If you have central air, you can put a good filter in your air return. If you don’t, you can buy a standalone air purifier.