Delhi tops the list of the most polluted cities in India as per an analysis conducted by the Centre for Research on Energy and Clean Air in October.

India has 29 states with at least 720 districts comprising of approximately 6 lakh villages, and over 8200 cities and towns ... out the pin code of state Uttar Pradesh right here.

A city in the NCR region of Uttar Pradesh, Ghaziabad has been one of the most polluted cities of India. The primary ...