Thus an AQI of 100 does not mean twice the pollution of AQI at 50 , nor does it mean twice as harmful .
The scale for each pollutant is non-linear , as is the final AQI score .
Thus an AQI of 100 does not mean twice the pollution of AQI at 50 , nor does AQI mean twice as harmful .
The scale for each pollutant is non-linear , as is the final AQI score .