Why don’t you use an AQI score?

Many air quality services use a single Air Quality Index (AQI), which combines pollutants like nitrogen dioxide, particulate matter, and ozone into one number. While AQI is useful as a general indicator, it has limitations:

• It reflects ambient air at a location, not what an individual actually breathes
• It does not account for time spent, activity level, or route choices
• It can vary between countries, making it harder to interpret consistently on a global scale

Instead, AirTrack focuses on personal exposure. For Premium users, we provide an AirTrack Score that gives a more meaningful, personalised view of your exposure - and helps you make practical decisions to reduce it.

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