Air quality improves in Dhaka, ranks 22nd globally...

Air quality improves in Dhaka, ranks 22nd globally

 Staff Correspondent

 Published: 04:57 PM, 10 August 2022   Updated: 04:58 PM, 10 August 2022

File Photo

File Photo

Air quality in the densely populated city of Dhaka has improved significantly. Currently, Dhaka is ranked 22nd on the list of the most polluted cities in the world. The city’s air pollution is at normal levels.

Dhaka’s Air Quality Index (AQI) score was 68 at 9:30 am on Wednesday. 

An AQI score between 50 and 100 is considered “normal”. However, such conditions are also considered “risky” for some people, especially, those unusually sensitive to air pollution.

Riyadh in Saudi Arabia, Lahore in Pakistan and Dubai in the United Arab Emirates (UAE) occupy the top 3 places in the list of most polluted cities with AQI scores of 309, 153 and 151 respectively.

An AQI score of 101 to 200 is considered “bad” for particularly sensitive groups.

An AQI score between 201 and 300 is said to be “poor”, while a score of 301 to 400 is considered “risky”, posing a serious health risk to residents.

The AQI index provides information on how clean or polluted the air is in different cities around the world and indicates any health risks that may pose to people living in that city.

AQI in Bangladesh is determined based on 5 types of pollution: particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone (O3).