Me yesterday:

Let's build a air pollution sensor. This will be fun.

Me today:

Hm, is my sensor damaged? It shows values above the air polution limits. This can't be right 🤔 .

Opens map of luftdaten.info

🙀🙀🙀 https://toot.berlin/media/XM0Ew7ec5mxGY8G8blA