BreezoMeter uses an index called “AQI (AU)”
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 (AU) represents air quality levels according to the following health categories:
Very good air quality
0 to 33
Good air quality
34 to 66
Fair air quality
67 to 99
Poor air quality
100 to 149
Very poor air quality
150 to 199
Hazardous air quality
1h or 4h avg.
1h or 24h avg.
The chart displays the pollutants that are part of the The following chart displays the pollutants that are part of the AQI (AU) calculation and the timeframe taken to average each pollutant type. :
Explore the local air quality indexes BreezoMeter uses in various countries.