I found this online: Where in China can you find the worst air pollution? You might be surprised ... “Xinjiang and Henan were China's top two polluted provinces in the first quarter of 2016, a survey by Greenpeace has found. read more
Hotan, like many other cities that surround the Taklamakan Desert in Xinjiang, suffers from frequent sandstorms that have the ability to dramatically increase the PM2.5 count in a matter of just an hour. read more
Well in Mumbai the air pollution is not as high as in China. China steals the first rank in terms of Air pollution and the often smog that chokes many of its mega cities. But that should not relax the Mumbaikars. Mumbai is the fifth most polluted city in the world. read more