Dhaka ranks 2nd most polluted city
09 January 2022, 03:22 pm | Updated: 27 November 2024, 11:34 am
Dhaka has been ranked second-most polluted in the latest list of world cities with the worst air quality being categorised as 'very unhealthy'.
The city recorded a fall in air pollution with its air quality index (AQI) hitting 188 around 10:21am on Sunday.
Meanwhile, China’s Shenyang and India’s Kolkata occupied the first and third spots with AQI scores of 253 and 188 respectively, in the latest list of world cities with the worst air quality.
Air quality in this ‘hazardous’ range triggers health warnings of emergency conditions by media outlets.
AQI, an index for reporting daily air quality, is used by government agencies to inform people how clean or polluted the air of a certain city is, and what associated health effects might be a concern for them.
In Bangladesh, the AQI is based on five criteria pollutants -- Particulate Matter (PM10 and PM2.5), NO2, CO, SO2 and Ozone.
Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy during winter and improves during monsoon.
