Prime Minister Narendra Modi’s constituency Varanasi, which goes to polls on Sunday, continues to have only one air quality monitoring station, despite being ranked as among the top 3 most polluted cities in the world three years ago, a Right to Information request has found.Zero ‘good-air’ daysThe Central Pollution Control Board’s 2015 dataset (made public in 2016) found Varanasi’s air quality to be among the most toxic in the country and that it had only one air quality monitor capable of measuring particulate matter 2.5 and particulate matter 10 levels. Out of 227 days measured in 2015, the city had zero ‘good-air’ days and this was attributed to the heavy levels of industrial pollution. Biomass burning, vehicular emissions, brick kilns and diesel generator sets were also major contributors. Let Me Breathe, a portal that investigates how people cope with poor air quality, queried the city’s civic officials and the Uttar Pradesh Pollution Control Board with Right to Information requests to check what progress the city had made in improving its air quality.While the average air quality for PM 2.5 from 2017-2019 had improved to 104 from 206 in 2016, the maximum PM levels breached continued to be above 200, or in the “very poor” category.‘Most polluted’“Varanasi is one of the most polluted cities on the planet. Still there is only one monitoring station. While in the last few years the government has done amazing work on the beautification of the city and solar, it’s time to make air pollution a serious priority as well,” Tamseel Hussain, Founder, Let Me Breathe, said.While Varanasi’s municipal bodies had taken steps to address road dust and curb road-side burning of garbage, no data was provided on the number of violations and the steps taken to reprimand offenders, the RTI queries revealed.Varanasi is one of the cities that is part of the National Clean Air Campaign, an initiative by the Union Environment Ministry to improve air quality in 100 cities by 20% at least by 2024. One of the commitments under this is to improve air quality monitoring.In February, a study by IIT Kanpur and the Shakti Foundation showed Varanasi suffered from poor air quality for 70% of the days between October and November 2018 with PM 2.5 levels crossing 170 micrograms per cubic metre against the national average of 60 and the WHO average of 25.