New Delhi, Dec 13, 2016 : The holy city of Varanasi has India’s most toxic air, and many north Indian cities are recording worse air-quality than Delhi, according to a new report, in which IndiaSpend is a collaborator. In 2015, the north Indian cities of Varanasi and Allahabad had no days (of 227 and 263 monitored, respectively) with good air quality–when the average levels of fine, toxic dust called PM 2.5 was below national air quality safe levels–according to the report, which bases its findings on the Central Pollution Control Board’s (CPCB’s) 2015 data released in June, 2016.