“NEW DELHI: Airpocalypse II, a report by environmental NGO Greenpeace India, has found that more than 47% of the population in India is still living in areas where there is no airquality monitoring. Greenpeace researchers analysed PM10 (coarse pollution particles) annual averages for 280 cities monitored by the Central Pollution Control Board under their national air quality monitoring programme, which shows Delhi to be the most polluted and Hassan in Karnataka to have the cleanest air.”  The Times of India
Read it on Delhiair.org: Pollution in Delhi: Delhi most polluted among 280 cities where air quality is tracked