New Delhi, March 28 -- One important indicator of the level of pollution is the Air Quality Index (AQI). India faces significant challenges related to poor air quality as majority of the metropolitan cities in India have a high AQI score due to continuously increasing air pollution. According to IQAir4, 14 out 20 world's most polluted cities are located in India. As a quickly developing nation with an expanding population, India suffers from extreme air pollution. This problem is mostly caused by factors such as emissions from vehicles, industrial activities, and biomass burning. Sadly, exposure to pollutants like particulate matter (PM2.5 and PM10) and nitrogen dioxide (NO2 ) can cause severe respiratory issues, cardiovascular diseases, an...