Bought a monitor because aqi near me averages 50-100 during summer, pre-fire season.

Found my tvoc is constantly in .70-1.0 mg/m3 unless I open all windows and run fans. Then it drops to around .6 mg/m3. I now don’t worry at all about pm2.5 levels and just keep my windows open if the temps below 100. Buying the monitor showed me that my migraines and other issues (brain fog) were caused by the high voc. Opening windows even if it means breathing wildfire smoke makes the headaches disappear.

Anyone out there on the fence about buying a monitor, just do it. There are worse issues than pm2.5 and smoke, both of which you can detect with your nose.