There may be worse places on earth when it comes to Particulate Matter (PM) Pollution, but I happen to live next to a busy road with daily traffic jams and, as a consequence of that, have a dusty room that I need to clean almost every day. I also read about expats in countries like China or India who are complaining about the air quality in those places and who meticulously invest in good air filters for each room in their appartments. Good air filters are expensive! Hence, clean air seems to be be a commodity that also comes with a commercial value among other attributes. We take it for granted but complain when it isn’t available. And another issue with clean air is that you often don’t see the pollution – only the results. Polluted air reminds me of radioactivity or unhygienic surfaces: you don’t see it, hence can’t estimate the potential danger. That’s why a sensor to measure the Particulate Matter Pollution yourself is an approach to this open question. Continue reading “Particulate Matter Pollution”