There are many different air quality index (AQI) that are calculated in many different ways (https://en.wikipedia.org/wiki/Air_quality_index#)
- US AQI,
- CAQI
- WAQI
- EAQI,
- China AQI,
- etc…
Home assistant has the device class: aqi: Air Quality Index (unitless).
(Sensor - Home Assistant)
Should this device class only be used for a specific AIQ (for exmample US AQI) or is it meant to be used with a mix of different type of aqi’s?