Air pollution is back to haunt the national capital Delhi and nearby areas. A thick layer of smog blanketed several areas. The air pollution in the national capital drastically deteriorated once again with the air quality index at various locations touching breaching the 400 mark till 10 am today, including areas like Jawahar Lal Nehru stadium, Okhla, and Sriniwas Puri. Watch the video to know more.