Delhi has the worst air pollution out of the world's mega-cities with more than 14 million habitants
PM10 levels for the last available year in the period 2010-2016, micrograms per cubic metre of air
PM10 (ug/m3)
0
50
100
150
200
250
Delhi 292
Greater Cairo
284
Dhaka
104
Mumbai
104
Beijing
92
Shanghai
59
Istanbul
53
Mexico City
39
Sao Paulo
28
Buenos Aires
27