Poster Why Delhi has so much pollution level? (NASA Forest fire eve...

Kindly see through...

https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/top-8-main-causes-for-air-pollution-in-delhi/articleshow/61626744.cms

See this too..

https://en.wikipedia.org/wiki/Environmental_issues_in_Delhi

Also see this...

https://www.quora.com/Why-is-air-pollution-worse-in-Delhi-as-compared-to-other-mega-cities-like-Mumbai-and-Kolkata

Check here too...

http://www.thecitizen.in/index.php/en/NewsDetail/index/8/1784/Five-Reasons-Why-Delhi-Is-The-Most-Polluted-City-In-The-World

More to see here..

https://www.vox.com/energy-and-environment/2017/11/22/16666808/india-air-pollution-new-delhi

Also to see here...

https://yourstory.com/2017/11/delhi-air-pollution-six-reasons/

See this too...

http://www.dailypioneer.com/columnists/oped/the-truth-about-delhis-air-pollution.html

To be seen too...

https://www.ndtv.com/delhi-news/delhi-pollution-levels-in-city-rise-again-air-quality-stays-very-poor-1782586

See also...

https://www.ndtv.com/opinion/air-pollution-in-india-think-beyond-delhi-and-beyond-winter-1783204

Explore this...

http://www.telegraph.co.uk/travel/destinations/asia/india/articles/delhi-most-polluted-city-in-the-world/