Wildfire Smoke? My HVAC Filters Say No
Amazon Air Quality Meter is pretty good (and cheap)! As the wildfire smoke descends in our area, the outdoor IAQ is now 23 while indoor is 83 (due to HVAC filters). IAQ of 100 is best and below 65 is not very healthy.
IAQ of 23 translates to PM of 268 ug/m^3 vs mere 16 ug/m^3 for IAQ of 83!