• Tuesday, Mar 02, 2021
  • Last Update : 07:30 am

Air Quality Index ranks Dhaka's pollution 3rd worst in world

  • Published at 03:48 pm May 9th, 2019
Air Pollution
Photo: Mehedi Hasan/Dhaka Tribune

India’s Delhi topped the index, followed by Nepal's Kathmandu

Bangladesh’s capital, Dhaka, has ranked third-worst on the world Air Quality Index (AQI) — as its extreme air pollution makes it one of the most polluted cities.

On the real-time rankings, Dhaka scored 163 on Thursday, according to AirVisual, which monitors global air quality. 

Dhaka's air quality was classified as “unhealthy.”

Meanwhile, India’s Delhi topped the index with a score of 393; and Nepal's Kathmandu ranked second with a score of 170.

As one of the most densely-populated countries in the world, Bangladesh has been struggling with air pollution for a long time. Dhaka continuously ranks among the world’s most polluted cities.

Also Read- UN expert calls air pollution ‘the silent killer’

Brick kilns, vehicles run on fuel containing higher levels sulphur, as well as construction work, have all been identified as major sources of air pollution.

Air quality further declines during the dry months—from October to April—but improves during the monsoon.

The United States Environmental Protection Agency developed the Air Quality Index (AQI) to measure air quality. The AQI is divided into six categories, indicating increasing levels of harm to one’s health.

An AQI value over 300 represents hazardous air quality, and below 50 the air quality is good.

The index is based on the five criteria of pollutants regulated under the Clean Air Act: ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide.

The AQI debuted in 1968, when the National Air Pollution Control Administration undertook an initiative to develop an air quality index, and to apply the methodology to Metropolitan Statistical Areas.

Facebook 174
blogger sharing button blogger
buffer sharing button buffer
diaspora sharing button diaspora
digg sharing button digg
douban sharing button douban
email sharing button email
evernote sharing button evernote
flipboard sharing button flipboard
pocket sharing button getpocket
github sharing button github
gmail sharing button gmail
googlebookmarks sharing button googlebookmarks
hackernews sharing button hackernews
instapaper sharing button instapaper
line sharing button line
linkedin sharing button linkedin
livejournal sharing button livejournal
mailru sharing button mailru
medium sharing button medium
meneame sharing button meneame
messenger sharing button messenger
odnoklassniki sharing button odnoklassniki
pinterest sharing button pinterest
print sharing button print
qzone sharing button qzone
reddit sharing button reddit
refind sharing button refind
renren sharing button renren
skype sharing button skype
snapchat sharing button snapchat
surfingbird sharing button surfingbird
telegram sharing button telegram
tumblr sharing button tumblr
twitter sharing button twitter
vk sharing button vk
wechat sharing button wechat
weibo sharing button weibo
whatsapp sharing button whatsapp
wordpress sharing button wordpress
xing sharing button xing
yahoomail sharing button yahoomail