Heavy rain, high humidity levels and low vehicular traffic have ensured that the city breathed cleaner air in the past one month. Between August 5 and September 5, the city has had nine good air days, when the air quality index (AQI) was below 50. On other days, too, the air quality hovered around the moderate level — clocking between 50 and 100. On Sunday, the AQI was 56.
