There are some truly personal and portable monitors but the trade off is simplified report—almost Green, Orange, Red—or just one measurement, maybe just PM2.5. Others, as price goes up add in lots of other monitoring. I’ve focused on only particulate matter for the moment. Try a search on Amazon and see the near overwhelming selection of devices.
Thank you; I’ll do that. I live just outside of Cleveland, so it would probably be good to know when the air is breathable.