“For too long, we have been told to choose between economic growth and environmental protection, between today’s priorities and tomorrow’s climate. These are false choices. Air pollution is taking a devastating toll on lives and economies. Last year, air pollution contributed to 6.4 million premature deaths, 5.5 million new cases of childhood asthma, and millions more of diabetes, dementia and heart disease – a toll long underestimated, and borne most heavily by those least able to bear it.”
These words from the United Nations Secretary-General come at a critical time for Bangladesh, which continues to endure a severe crisis of pollution-related mortality.
The statistics are staggering: 61 deaths per 100,000 people in Bangladesh are attributable to fine particulate outdoor air pollution, totaling 63,347 deaths in 2023. This deadly pollutant, known as PM2.5, consists of tiny solid or liquid particles measuring 2.5 micrometers or less in width. With an annual mean exposure of 69.3 µg/m³, the average person in Bangladesh breathes air that exceeds the World Health Organization’s guideline by 14 times.
With every breath, these minute particles—comprising soot, soil dust, sulfates, and other toxins—penetrate deep into the body to damage lungs, hearts, and brains. The deadliest conditions linked to PM2.5 exposure include stroke, heart disease, lung cancer, and lower respiratory infections like pneumonia. High levels of fine particles also contribute to chronic conditions like type 2 diabetes, hinder cognitive development in children, and exacerbate mental health problems.
According to the State of Global Air Report 2025, the crisis is global but highly concentrated. In 2023, India and China each recorded more than 2 million deaths attributable to air pollution, while Bangladesh, Pakistan, and Nigeria each saw over 200,000 total air pollution deaths. Meanwhile, Indonesia, Myanmar, and Egypt each surpassed 100,000 deaths.
As Bangladesh prepares to join the world community to observe on September 7 for the seventh straight year – International Day of Clean Air for Blue Skies – the UN Secretary-General made a fervent call: “I urge governments, businesses and investors to choose action now. Let the air we share unite us.”
He says: “The case for action has never been clearer. The science and the economics point in the same direction: every dollar invested in proven clean air solutions returns 15 US dollars in benefits. Reducing air pollution protects health, boosts productivity, and builds more resilient and prosperous societies.”
The United Nations Environment Programme (UNEP) says, fine particle pollution is a major cause of death from chronic obstructive pulmonary disease, ischemic heart disease, tracheal, bronchus and lung cancer, stroke, lower respiratory infections, type 2 diabetes and neonatal disorders.
Data from the United Nations Environment Programme (UNEP) underscores the specific disease burden in Bangladesh, where outdoor PM2.5 pollution is responsible for a significant percentage of deaths across major health conditions: chronic obstructive pulmonary disease (17%), ischemic heart disease (11%), lung cancer (11%), stroke (10%), lower respiratory infections (9%), type 2 diabetes (5%), and neonatal disorders (5%).
While air pollution has been tied to human activity for millennia—evolving from early cooking fires to the coal-choked cities of the Industrial Revolution and modern 20th-century industrialization—its current impacts are profoundly unequal.
Though atmospheric conditions like wind can disperse or trap pollutants across vast distances, the immediate suffering is disproportionately borne by developing nations and their most vulnerable populations: women, children, and the elderly.
As Bangladesh joins the global community this Monday, September 7, to observe the International Day of Clean Air for Blue Skies, the Secretary-General’s call for action carries immense urgency.
"The science and the economics point in the same direction," he noted, emphasizing that every dollar invested in proven clean air solutions returns 15 US dollars in benefits by protecting health, boosting productivity, and building resilient societies.
For Bangladesh to realize these benefits, it must confront the immediate structural drivers of its toxic air: a large fleet of unfit public buses blowing smoke, a systemic lack of law enforcement against illegally run brick kilns, and rampant infrastructure development that routinely ignores pollution protocols.