Thanks to the OK Lab Stuttgart I now can measure the particulate matter in the air here in F’Hain

You can see the data here:

https://opensensemap.org/explore/58f0cd55ba279000119c3c02 https://toot.berlin/media/3DhH7aR-ImmVcOcJ6oc

And a short how to here:
http://luftdaten.info/feinstaubsensor-bauen/