BreezoMeter uses an index called “AQI (PH)”
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.
AQI (PH) represents air quality levels according to the following health categories:
Good air quality
0 to 50
Fair air quality
51 to 100
Unhealthy air quality for sensitive groups
101 to 150
Very unhealthy air quality
151 to 200
Acutely unhealthy air quality
201 to 300
301 to 500
1h or 8h avg.
The chart displays the pollutants that are part of the The following chart displays the pollutants that are part of the AQI (PH) calculation and the timeframe taken to average each pollutant type. :
Explore the local air quality indexes BreezoMeter uses in various countries.