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Air quality: Dhaka ranks worst, Baridhara-Bashundhara remain very unhealthy

  • Published at 11:40 am February 29th, 2020
Air polution in Dhaka Mehedi Hasan/Dhaka Tribune

Baridhara and Bashundhara showed AQI scores of 225 and 224 respectively

Dhaka has been ranked as the worst in air pollution across all major cities of the world.

According to Air Visual at 10:05pm on Saturday, Dhaka showed an average AQI (Air Quality Index) score of 221, classified as "very unhealthy."

However, some parts of the capital city showed higher AQI score than the city average. Residential areas like Baridhara and Bashundhara showed AQI scores of 225 and 224 respectively.

When the AQI score is between 201 and 300, everyone may experience more serious health effects. 

Mongolia's Ulaanbaatar and Myanmar's Yangon occupied the second and third spots in the list of cities with worst air quality with AQI scores of 184 and 176 respectively. 

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 (O3).

The Department of Environment has also set national ambient air quality standards for these pollutants. These standards aim to protect against adverse human health impacts.

Dhaka has long been grappling with air pollution. Its air quality usually improves during monsoon.