I'm not surprised. Our modern air is... poor, and that's before you get into fire season and such out west.
I've started being far more aggressive with air filtration in the house and my office. Get an air quality monitor that shows you PM2.5 and PM10, you'll be horrified by how high those levels are often enough. I've been using "filter boxes" for the most part (a 3-4 furnace filter box around a box fan or similar) and they do a great job of pulling the PM out of the air.
I can fairly regularly keep PM in the sub-5 ug/m^3 range, even during smoke season - though it's a lot of airflow through the filters.
I've started being far more aggressive with air filtration in the house and my office. Get an air quality monitor that shows you PM2.5 and PM10, you'll be horrified by how high those levels are often enough. I've been using "filter boxes" for the most part (a 3-4 furnace filter box around a box fan or similar) and they do a great job of pulling the PM out of the air.
I can fairly regularly keep PM in the sub-5 ug/m^3 range, even during smoke season - though it's a lot of airflow through the filters.