If hazy skies, and coughing fits are regular features in your day, you know you're one of the millions living in India's most polluted cities, and suffering its implications.
At a time like this, keeping tabs on the air quality in your area could help you make more informed choices.
AQI, or Air Quality Index, calculates the concentration of pollutant particles like PM 2.5, PM10, CO2, O3, etc.


