Dhaka’s air quality showed significant improvement on Saturday morning as it ranked 68th worst in the Air Quality Index (AQI), reports UNB.
It had an AQI score of 26 at 0841 am and its air quality was classified as ‘good’.
China’s Beijing, China’s Shenzen and South Africa’s Johannesburg occupied the first three spots in the list of cities with the worst air with scores of 168, 129 and 123 respectively.
When the AQI value is between 0 and 50, the air quality is good. Dhaka usually ranks among top 10 cities with worst air quality.
The AQI, an index for reporting daily air quality, informs 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. Its air quality usually improves during monsoon.
