BreezoMeter uses an index called “OUI (LT)”
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.
OUI (LT) represents air quality levels according to the following health categories:
Very low air pollution
Low air pollution
Average air pollution
High air pollution
Very high air pollution
1h or 8h 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 OUI (LT) calculation and the timeframe taken to average each pollutant type.:
Explore the local air quality indexes BreezoMeter uses in various countries.