India admits Delhi matches Beijing in air pollution threat to public health.

Guardian: “India’s state air monitoring centre has admitted that pollution in Delhi is comparable to that of Beijing, but disputed a World Health Organisation(WHO) finding that the Indian capital had the dirtiest atmosphere in the world.”
“A study of 1,600 cities across 91 countries released on Wednesday by the WHO showed Delhi had the world’s highest annual average concentration of small airborne particles (known as PM2.5) of 153.
These extremely fine particles of less than 2.5 micrometres in diameter are linked with increased rates of chronic bronchitis, lung cancer and heart disease as they penetrate deep into the lungs and can pass into the bloodstream.
Indian officials in the past have bristled at research showing the capital as being worse than Beijing where thick smog has triggered public health warnings and public concern that are mostly absent in Delhi.
“If we compare yearly averages for each year from 2011-2014 then both cities [Delhi and Beijing] are almost comparable,” Gufran Beig from India’s state-run System of Air Quality Weather Forecasting and Research (SAFAR) acknowledged in an email sent to AFP.
….By comparison, London had an annual PM2.5 reading of 16.
….The centre said that 13 of the 20 most polluted cities in the world were in India.”