[calsy]

Unlike basic weather metrics like temperature, humidity etc. Air quality measurements are directly impacted by human activity and are extremely contentious.

In my hometown, there is a fight between locals and waste operators over excessive burn offs. The validity of air quality readings from the area are being tested in court.

In the past, the Vietnamese government removed IQAir from the App Store and Google Play as citizens became increasingly concerned about the air quality in the capital cities.

You wont learn much if you label everything you don't understand a 'conspiracy theory'. Air quality is not just another weather measurement.