the air quality obsession continues

Today I learned that if the air outside gets bad enough, it's important to switch your house pressurization system from 'pressurize' to 'recirculate' for a while to let the filter get caught up. I also learned in a totally unscientific poll of two of my friends that the local sick-people community has never seen the air look quite this bad, and the wind has been generally from the west, so the west side of town is better than the east side.

This weather system is supposed to change tomorrow afternoon or Wednesday, so as soon as it goes away, I promise to stop obsessing over it.