Dhaka's air quality is still in the 'unhealthy' zone on Sunday morning, reports UNB.
With an air quality index (AQI) score of 172 at 9 am, the capital of Bangladesh ranked sixth in the list of cities worldwide with the worst air quality.
An AQI between 101 and 150 is considered 'unhealthy', particularly for sensitive groups.
In Bangladesh, the AQI is based on five criteria pollutants -- Particulate Matter (PM10 and PM2.5), NO2, CO, SO2, and Ozone.
