Delhi, Kolkata, and Mumbai are among the top ten most polluted cities in the world, according to the IQAir Air Quality Index.
Highlights:
Delhi, Kolkata, and Mumbai are among the top 10 most polluted cities in the world, according to statistics from IQAir.
With an AQI of 556, Delhi topped the list, while Kolkata and Mumbai, in 4th and 6th place, had AQIs of 177 and 169, respectively.
Lahore, Pakistan, and Chengdu, China, are among the cities with the poorest AQI indexes.
IQ Air:
IQ Air is an air quality and pollution city tracking service, a Switzerland-based Climate organisation.
IQAir is also a United Nations Environmental Program (UNEP) technology partner (UNEP).
An AQI of zero to 50 is regarded as ‘good,” 51 to 100 is considered satisfactory,’ 101 to 200 is considered moderate,’ 201 to 300 is considered ‘poor,’ 301 to 400 is considered very poor,’ and 401 to 500 is considered severe.’