BreezoMeter uses an index called “HKI (TR)”
We take the average of each pollutant type according to local government definitions.
An official conversion table is used to convert average pollutant concentrations to AQI for each pollutant.
The final AQI is determined by taking the worst AQI among all pollutants. The worst pollutant being the dominant pollutant.
HKI (TR) represents air quality levels according to the following health categories:
Good air quality
0 to 50
Moderate air quality
51 to 100
Unhealthy for sensitive groups air quality
101 to 150
Unhealthy air quality
151 to 200
Poor air quality
201 to 300
Hazardous air quality
301 to 500
The chart displays the pollutants that are part of the The following chart displays the pollutants that are part of the HKI (TR) calculation and the timeframe taken to average each pollutant type. :
Explore the local air quality indexes BreezoMeter uses in various countries.