Tuesday, 7 February, 2023

Dhaka’s air remains ‘unhealthy’

Dhaka’s air remains ‘unhealthy’

Dhaka’s air quality continued to be in the ‘unhealthy’ zone, as the metropolis ranked fifth in the list of world cities with the worst air quality with an air quality index (AQI) score of 177 at 8:40 am on Saturday, reports UNB.

An AQI between 101 and 200 is considered ‘unhealthy’, particularly for sensitive groups. Pakistan’s Lahore, India’s Delhi and Kolkata and Mongolia’s Ulaanbaatar occupied the first four spots in the list, with AQI scores of 353, 295, 186 and 180, respectively.

An AQI between 201 and 300 is said to be ‘poor’, while a reading of 301 to 400 is considered ‘hazardous’, posing serious health risks to residents.

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 in winter and improves during the monsoon.