Gurugram has been ranked number one polluted city with an annual average PM2.5 (presence of fine particulate matter) reading of 135.8 micrograms per cubic metre, followed by Ghaziabad (135.2 micrograms).
According to the latest data compiled in the IQ Air Visual and and @greenpeace Southeast Asia Gurgaon in the National Capital Region or NCR is the world's most polluted city.

















