The Indian cities with the poorest air quality

Delhi, Faridabad and Varanasi have the poorest air quality among the 32 Indian cities which are connected to the web-based system National Air Quality Index Portal.
Publication Date:
24/11/2016
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Delhi, Faridabad and Varanasi have the poorest air quality among the 32 Indian cities which are connected to the web-based system National Air Quality Index Portal.