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31 January, 2020 06:05:45 PM / LAST MODIFIED: 31 January, 2020 06:05:57 PM

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Air Quality Index: Dhaka ranks worst again

Independent Online/UNB
Air Quality Index: Dhaka ranks worst again
A hazy view of Hatirjheel area from Moghbazar flyover at 7:40am on Friday. Photo: UNB

Bangladesh’s capital Dhaka topped the list of cities with the worst air again for the second consecutive day in the Air Quality Index (AQI) on Friday morning.
 
It had an AQI score of 313 at 08:16am. The air was classified as ‘hazardous’.
 
An AQI score is between 301 and 500 implies health warnings of emergency conditions and the entire population is more likely to be affected.
 
India’s Kolkata and China’s Shenyang occupied the second and third spots in the list of cities with the worst air quality with AQI scores of 218 and 195 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. The air quality usually improves during monsoon.

BK

 

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Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

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