However, India's environmental court may lack the power to enforce change.
"India now approaches China in the number of deaths attributable to PM2.5", the report said.
He cited the confluence of rapid industrialization, population growth and an aging populace in India that is more susceptible to air pollution. India's notoriously poor air quality causes nearly 1.1 million premature deaths every year, almost on a par with China, concluded a joint report by two USA -based health research institutes.
The report also showed that 67 per cent of the total "ozone attributable" deaths were reported from India. In winter, the coal-fired plants are the biggest contributor to the choking smog in northern part of the country.
Globally, there were 4.2 million premature deaths and a loss of 103 million healthy years of life in 2015, making air pollution the fifth-highest cause of death among all health risks, according to a Health Effects Institute report.
Poor air quality causes almost 122, 400 premature deaths every year in Bangladesh, says a new study.
"These studies are hard to do, and isolating the effects of air pollution is hard", Ezzati said.
New evidence and methodologies mean that the estimate is significantly higher than the figure published by the World Health Organization a year ago, which put the number of global air pollution-related deaths in 2012 at 3 million, HEI said. India is taking longer to address coal emissions and vehicle standards, he said, meaning its death toll will continue to rise. India's Supreme Court banned the sale of fireworks, popular during the Hindu festival Diwali, in the capital after the emergency.
India has yet to undertake sustained public policy initiatives to reduce pollution, said Mr Gopal Sankaranarayanan, a lawyer who successfully petitioned for the ban of licences to sell fireworks in New Delhi past year. In December, the data portal IndiaSpend found that the pilgrimage city of Varanasi had the country's worst air, followed by heavily industrial cities such as Kanpur.