With people spending more time indoors and at home right now, I’ve seen more discussions on Twitter about indoor air quality. This matters in Michigan, because it’s cold for a good portion of the year. DHH did a presentation at Basecamp on why air quality matters. He’s been recommending the Awair sensor, but I have seen a number of complaints about it being inaccurate. (DHH has tested multiple of the Awairs and found them to be generally fine.) This presentation goes through particulate tests for a number of “cheap” monitors, and did find variation among them. I ended up ordering an AirVisual Pro as a result of the breakdown there and other reviews. It appears to have a very nicely readable display, which is a nice feature so that anyone in the household can take a look without dealing with the app.