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The Local Air Quality Index - Turkey

The Local Air Quality Index is a method used by the government and companies to communicate air quality in an understandable way.

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How we calculate the air quality index - Turkey

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.

Index Health Categories

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

Pollutant Type



24h avg.


8h avg.


1h avg.


1h avg.


8h avg.

Index Pollutant Types

The following chart displays the pollutants that are part of the HKI (TR) calculation and the timeframe taken to average each pollutant type:

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Air Quality Indexes Around The Globe

Explore the local air quality indexes BreezoMeter uses in various countries.