According to the latest air quality index report (AQI), Dhaka, the capital city of Bangladesh, secured the 4th position on the global list of cities with the most severe air pollution.
With an Air Quality Index (AQI) score of 162 recorded at 9:00 am this morning, Dhaka joined the unfortunate ranks of cities battling hazardous air conditions. Topping the list were Lahore in Pakistan and Delhi in India, with both cities scoring an AQI of 190. Shenyang in China followed closely with an AQI of 163.
The AQI scale categorizes air quality levels, and an AQI score between 101 and 150 is considered “unhealthy for sensitive groups,” while a score of 151 to 200 falls under the “unhealthy” category. Moving up the scale, an AQI score of 201 to 300 is classified as “very unhealthy,” while a reading above 301 is deemed “hazardous,” posing severe health risks to residents.
The air quality index in Bangladesh is based on the measurement of five criteria pollutants, namely particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), and ozone (O3). These pollutants are known to contribute significantly to air pollution and its adverse effects on public health.
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Dhaka has been grappling with air pollution issues for a considerable time, and it continues to be a pressing concern. Air pollution consistently ranks as one of the leading risk factors for premature death and disability worldwide. The World Health Organization (WHO) estimates that air pollution is responsible for approximately seven million deaths annually, mainly attributed to increased mortality rates from stroke, heart disease, chronic obstructive pulmonary disease (COPD), lung cancer, and acute respiratory infections.
