The Gridded Population of the World, also known as GPW, can be used as a way to estimate the amount of anthropogenic pollution.

The following animation is applied to Northern India, and based on the GPW version 4 combined with the real-time wind forecast from data the Global Forecast System.

The full explanation available is available from aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/