Dhaka’s air quality remains unhealthy, despite the fact that it is no longer the world’s most polluted city. The metropolis ranked 14th in the list of world cities with the worst air quality at 9.30 a.m. on Wednesday, with an air quality index (AQI) score of 105.
Dubai in the United Arab Emirates, Riyadh in Saudi Arabia, Tehran in Iran, and Delhi in India ranked first through fourth, with AQI scores of 302, 259, 224, and 176, respectively. An AQI between 101 and 200 is considered ‘unhealthy,’ especially for vulnerable groups. The AQI in Bangladesh is based on five pollutants: Particulate Matter (PM10 and PM2.5), NO2, CO, SO2, and Ozone. Dhaka has long been plagued by air pollution problems. Its air quality typically deteriorates during the winter and improves during the monsoon.
According to a March 2019 report by the Department of Environment (DoE) and the World Bank, the three main sources of air pollution in Dhaka are “brick kilns, vehicle fumes, and dust from construction sites.”