New Delhi, Aug. 18 -- Showers on Sunday helped keep Delhi's air quality in the "satisfactory" range for the 53rd day this year, the most such days till August 17 in five years, according to CPCB data. In the corresponding period last year, Delhi logged 37 such days, with no "good" air day - when the AQI is 50 or lower. It logged 46 "satisfactory" air days in 2023, 44 in 2022, 36 in 2021, 76 in 2020, 28 in 2019, 28 in 2018, 27 in 2017 and 14 such days till this point in 2016....