The World Health Organization’s recent Global Burden of Disease (GBD) Assessment estimates that outdoor air pollution causes 620,000 premature deaths per year in India, a six fold increase since 2000. The main causes are growing emissions of particulate emissions (PM10) from transport and power plants. GBD in this analysis has ranked air pollution as the sixth most dangerous killer in South Asia and fifth leading cause of deaths in India.
Also, according to the WHO, across the G-20 economies, 13 of the 20 most polluted cities are in India and over 50% of the sites studied across India had critical levels of PM10 pollution. A recent rapid survey by Delhi based Center for Science and Environment revealed that almost 75% of respondents considered air pollution as a major cause of concern and as responsible for respiratory illnesses.