World Health Organization - Delhi, most polluted city in the world

[Rafi]

NEW DELHI: Government today said the World Health Organisation's (WHO) recent report describing Delhi as the most polluted city of the world by considering estimated data for fine dust in a select manner was "improper"

WHO's Terms Delhi as Most Polluted City in a Select Manner:Govt -The New Indian Express

You need a gas mask to just walk around.