With the increase in air pollution in Thailand, I’ve been researching more about evaluating the data. In my condo, I’ve multiple devices to measure air quality and that I’ve learned is that I’ve been mis-evaluating the data.
Micrograms per cubic meter is the absolute value. Air Quality Index (AQI) is a relative data point, derived from the previously-mentioned μg/m3 and subjective to how a country considers “what is fine, moderate, to dangerous.”
See: What is the difference between the PM2.5 and AQI measurements?