Tuesday, 30 November, 2021

Dhaka ranks 3rd worst in air quality index

  • Sun Online Desk
  • 20th November, 2021 12:27:56 PM
  • Print news

Air pollution continues to be one of the top most challenges for Bangladesh -- its capital has been ranked the third-most polluted city in the world, UNB reported.

The capital's air quality index (AQI) was recorded at 182 around 11am. The air was classified as ‘unhealthy’.

Pakistan’s Lahore and India’s Delhi occupied the first and second spots in the list with AQI scores of 407 and 311, respectively.

An AQI between 101 and 200 is considered 'unhealthy', particularly for sensitive groups.

Similarly, 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.

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.