AQI
Dhaka's air back to 'unhealthy' zone
After a marked improvement in the past week, Dhaka's air quality slipped back to the 'unhealthy' zone on Tuesday.
With an air quality index (AQI) score of 156 at 12.30pm on Tuesday, the metropolis ranked third in the list of world cities with the worst air quality.
India’s Delhi and Iran's Tehran occupied the first two spots, with AQI scores of 158 and 170, respectively.
An AQI between 101 and 200 is considered 'unhealthy', particularly for sensitive groups.
Read: Pre-monsoon showers to drench Bangladesh
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".
Read: HC to hear rule on bringing PK Halder back on June 12
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.
Dhaka's air quality improves remarkably
Dhaka's air quality continued to be in the ‘moderate’ zone on Sunday, mainly owing to rains in different parts of the country.
With an air quality index (AQI) score of 72 at 10.29am, the city ranked 23rd in the list of world cities with the worst air quality.
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.
READ: Dhaka's air quality remains 'moderate'
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.
Dhaka's air quality turns 'moderate'
Dhaka has seen a marked improvement in its air quality due to showers triggered by cyclonic storm ‘Asani’.
With an air quality index (AQI) score of 80 at 10.05am on Wednesday, the metropolis ranked 17th in the list of world cities with the worst air quality. Dhaka's AQI was categorised as ‘moderate’.
Pakistan’s Lahore, Chile’s Santiago and India’s Delhi occupied the first three spots in the list, with AQI scores of 179, 157 and 153, respectively.
Read: Rain's coming, says weatherman
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".
Read: Minister urges Sylhet DC not to collect entry fee at Jaflong
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.
Dhaka continues to gasp for fresh air
Dhaka's air quality remained 'unhealthy' on Saturday, as the metropolis continued to dominate the list of cities with the worst air quality in the world.
On Saturday, Dhaka occupied the third position in the list as its air quality index (AQI) was recorded at 193 at 8.52am.
India’s Kolkata and Pakistan’s Lahore occupied the first two spots with AQI scores of 211 and 197, 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.
READ: Experts seek winter plan to fight Dhaka’s air pollution
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 brick kilns, fumes from vehicles and dust from construction sites as the three main sources of air pollution in Dhaka.
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.
READ: Air pollution cuts Dhaka dwellers’ life expectancy by 7.7 years: Study
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.
AQI: Dhaka’s air remains unhealthy
Dhaka's air quality remained 'unhealthy' as the city continued dominating the list of cities with the worst air quality in the world.
Dhaka occupied the second position in the list as its Air Quality Index (AQI) was recorded at 192 at 9am on Monday.
Read: Air Quality Index: Dhaka ranks 3rd worst
India's Kolkata and Pakistan’s Lahore occupied the first and third spots, with AQI scores of 197 and 189 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.
Read: Dhaka’s air quality still ‘unhealthy’
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.
Air Quality Index: Dhaka ranks 3rd worst
The densely populated capital of Bangladesh continues to dominate the list of cities with the worst air quality in the world.
On Sunday, Dhaka occupied the third position in the list as its Air Quality Index (AQI) was recorded at 176 at 9.31am.
Pakistan’s Lahore and Myanmar’s Yangon occupied the first two spots, with AQI scores of 188 and 183, 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.
READ: Air Quality Index: Dhaka ranks 3rd worst
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.
READ: Dhaka's air quality is still 'unhealthy'
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.
Dhaka’s air still ‘very unhealthy’
The densely populated capital of Bangladesh remains on top of the list of world cities with the worst air quality.
On Tuesday, Dhaka’s air quality index (AQI) was recorded at 276 at 9.22 am, classified as 'poor' or 'very unhealthy'.
India’s Mumbai and China’s Shenyang occupied the next two spots, with AQI scores of 234 and 232, respectively.
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.
Also read: Dhaka again ranks world’s most polluted city
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 during winter and improves during 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".
Also read: Dhaka's air quality is still 'unhealthy'
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.
Dhaka is the most polluted city on Earth
Avoid outdoor activities. It's hazardous to breathe in Dhaka.
Yes, the densely populated capital of Bangladesh has once again topped the list of world cities with the worst air quality.
Dhaka's air quality index (AQI) was recorded at 316 at 10.46am on Friday, which is considered ‘hazardous’.
India’s Delhi and Kolkata occupied the second and third spots with AQI scores of 210 and 200 respectively, in the latest list.
Also readDhaka is world's most polluted city
An AQI above 300 is considered 'hazardous' for everyone and doctors advise people to avoid all outdoor activities.
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’s air quality usually turns unhealthy during winter and improves during 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".
Also read: Dhaka's air quality is still 'unhealthy'
With the advent of winter, the city’s air quality starts deteriorating sharply due to the massive discharge of pollutant particles from construction works, 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 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.
No respite for Dhaka residents as air quality still ‘unhealthy’
Bangladesh’s capital Dhaka ranked fourth worst in Air Quality Index (AQI) on Monday morning.
The capital city had an AQI score of 197around 10am as the air was classified as ‘unhealthy’.
An AQI between 101 and 200 is considered 'unhealthy', particularly for sensitive groups.
Pakistan’s Lahore, Afghanistan’s Kabul and India’s Delhi occupied the top three spots with AQI scores of 426, 395 and 224, which is classified as ‘Hazardous’ and ‘very unhealthy’ respectively.
Air quality in this ‘hazardous’ range triggers health warnings of emergency conditions by media outlets. Besides, when air quality is in this 'very unhealthy' range, it is expected that there will be widespread effects among the general population and more serious effects in members of sensitive groups.
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.
Read: Dhaka breathes ‘unhealthy’ air as AQI dips
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 during winter and improves during monsoon.
Environmental experts have stressed the need for effective measures to protect Dhaka city dwellers from air pollution during the winter when it usually turns unhealthy and hazardous.
They suggest sweeping the city’s roads with water regularly, covering construction sites and materials, and stopping the movement of overloaded and unfit motor vehicles in the city.
The experts blame the authorities concerned for their lack of seriousness as no visible steps are seen yet to improve the air quality, which worsens terribly from November to February.
From January to March in 2021, the air quality was hazardous for 12 days, very unhealthy for 58 days, unhealthy for 19 days and unhealthy for sensitive groups in one day in Dhaka, one of the most polluted cities in the world.
Read: Experts lament lack of steps to check air pollution in Dhaka city
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, as per the World Health Organization (WHO).
Dhaka’s air quality improved in lockdown, a blessing in disguise!
The air quality of Dhaka city has made a marked improvement by some 45pc on average a day during the first seven days of the Covid-19 lockdown due to the low level of emissions.
According to a survey conducted by Center for Atmospheric Pollution Studies (CAPS) of Stamford University Bangladesh, four reasons effectively worked behind the strange improvement in the air quality.
Read Dhaka keeps grappling with ‘hazardous’ air
It said low traffic flow, suspension of road renovation and construction works and lack of activities to burn wastes led to the improvement in the air quality though it is said to be a short-lived gain.
Even the air pollution declined by 70pc in some areas in the city during the April 14-21 period, the survey says.
Read No respite from pollution as Dhaka’s air quality still ‘unhealthy’
The survey was carried out under a project titled “Promoting Democratic Governance and Collective Advocacy for Environmental Protection in Dhaka City” with financial support from USAID and UKAid.
As part of the survey, the air quality was measured using automatic equipment for eight hours a day in 10 areas of the capital.
Also read: Dhaka is world's most polluted city
The measurement showed that the air quality has improved on average 45pc a day from April 14 to 21 last.