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Ashulia teacher killing: Prime accused Jitu arrested No teacher should have to suffer such barbarity Zero possibility of salt crisis during Eid: salt traders HC stays exemption of alleged rapist, orders to surrender before Nilphamari tribunal in 4 weeks Narcotics trade thriving despite law enforcers’ efforts Highest bid Tk 53 lakh for Range Rover at Ctg customs’ auction for 108 cars Video of biker “making away without paying” Padma Bridge toll goes viral North Bangladesh may see another flood after Eid Banks asked to open booths at cattle markets to detect fake notes Police FC beat Muktijoddha Sangsad Lyon bags five in spin battle at Galle After Padma Bridge, motorbikes might be banned on Dhaka-Mawa Expressway $68bn UK firm CEO quits job to “just sit at the beach, do nothing” Spike in Covid-19: No deaths, 2,241 cases reported in 24 hours; positivity rate 15.23% Bangladeshi company to invest $8.5 million in Uttara EPZ
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Environment

AQI Index: Dhaka's air quality currently 'moderate'

UNB, Dhaka
Sun May 15, 2022 12:38 PM Last update on: Sun May 15, 2022 02:31 PM
AQI Index: Dhaka's air quality currently 'moderate'
Photo: Kazi Akib Bin Asad

Dhaka's air quality continued to be in the 'moderate' zone today, mainly owing to rain in different parts of the country.

With an air quality index (AQI) score of 72 at 10:29am, Dhaka ranked 23rd in the list of world cities with the worst air quality.

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When the AQI remains between 51 and 100, the air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

India's Delhi, the United Arab Emirates' Dubai and Indonesia's Jakarta occupied the first three spots in the list, with AQI scores of 242, 186 and 162 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.

Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy in winter and improves during the monsoon.

A report by the Department of Environment (DoE) and the World Bank in March 2019 pointed out that the three main sources of air pollution in Dhaka "are brick kilns, fumes from vehicles and dust from construction sites".

With the advent of winter, the city's air quality starts deteriorating sharply due to the massive discharge of pollutant particles from construction work, rundown roads, brick kilns and other sources.

Air pollution consistently ranks among the top risk factors for death and disability worldwide. Breathing polluted air has long been recognised as increasing a person's chances of developing a heart disease, chronic respiratory diseases, lung infections and cancer, according to several studies.

As per the World Health Organization (WHO), air pollution kills an estimated seven million people worldwide every year, largely as a result of increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.

Related topic
AQI Index / Air Pollution in Dhaka / Air Quality Index / Bangladesh Air Quality Index / Air Pollution in Bangladesh
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