Delhi’s dust pollution back to Commonwealth Games days [http://cmsenvis.cmsindia.org/resources/newspaper/details.asp?id=92063]Bad old days are back in Delhi. Dust pollution, the cause of many pulmonary diseases, hit the peak again in 2016, after a lull of five years, in the capital.According to the Central Pollution Control Board (CPCB), dust pollution, which includes various particulate matter like PM 10, PM 2.5 and PM 1.0, shot up to 261 micrograms per metre cube again last year.