[Joeri]

We live in the city and always are struggling with allergies. The whole family is always coughing or sneezing. We bought a xiaomi air purifier like in the article last week, started using it in the bedrooms for a few hours in the evening, and the allergies cleared up overnight. The particulate sensor is mostly useless, a known problem with the xiaomi models, but running it at a fixed setting seems to clean the air quite effectively.

[andor]

The particulate sensor on my Xiaomi air purifier correlates really well with the numbers from my city's air quality network.

What doesn't work well for me is the auto mode, it barely does anything at less than 50µg/m^3, way too high even for the mediocre air in my area. So instead I use automation in their app to let it run at full speed for 30 or 60 minutes.

[5e92cb50239222b]

They use Chinese air quality standards, which are very high relative to most other countries for (probably) obvious reasons.

https://en.wikipedia.org/wiki/Ambient_air_quality_criteria