Luftdateninfo has a great tutorial on how to build a respirable dust sensor. It’s cheap, needs only little tech know-how, but it has a lot to offer – you can be part of a bigger community – and see your data on a constantly updated map. Even if your city tells you everything is fine.
Here’s the map.
That’s what it looks like: Feinstaub-Sensor-Bausatz-e1479558693357.jpg (599×350)
