It’s that time of the year again in #Hanoi, #Vietnam, when the capital is planetary top of the flops, air-wise.

My outdoor #airpollution sensor records numbers beyond insanity. The temperature inversion traps particles, there is no wind. Still no clue how the future plan for the people looks like.

Snapshot of an home automation system which displays data from air sensors outside, weather data and a management system for indoor air filters, all turned on and on max. Pi-powered.&10;&10;It's sunny, you see here, but outside is not sun in sight. That's related to the high PM 2.5 numbers recorded on the screen, 247 µg/m³ aka an AQI of roughly 500. &10;&10;In the background of the screen is a flower and a window, where you can sense the grey air.