Question

air quality index indicates the proportion of_____​

Answer 1

Here is ur answer..

Air quality indices have been created in different countries for the measurement of air quality. These indices measure the air quality in the country and indicate whether the amount of nitrogen dioxide, carbon monoxide and sulfur dioxide in the air exceeds the criteria set by the World Health Organization or not.

Answer 2

Answer:

air quality index indicates the proportion of amount of nitrogen dioxide, carbon monoxide and sulfur dioxide in the air exceeds the criteria set by the World Health organization or not.