The air itself had become a health hazard
On a Tuesday morning in late June, Dhaka's air carried a quiet burden its residents could not see but many would feel: an Air Quality Index of 119, placing the city seventh among the world's most polluted that day. The number belongs to a global language of risk, one that speaks most urgently to children, the elderly, and those whose lungs and hearts already labor under strain. Dhaka's struggle with its own air is neither new nor simple — it is the accumulated consequence of vehicles, industry, and dust, eased only briefly by monsoon rains before returning with the dry season's weight.
- Dhaka's AQI of 119 crossed into territory classified as 'unhealthy for sensitive groups,' a threshold that translates directly into health risk for children, elderly residents, and anyone managing asthma or heart disease.
- The city ranked seventh worst on earth that morning, trailing only Jakarta, Kinshasa, and Lahore — cities whose scores climbed into the 160s and 170s, a reminder of how much darker the scale can get.
- Six categories of pollutants — from microscopic PM2.5 particles to nitrogen dioxide and ground-level ozone — converge in Dhaka's air, each carrying its own damage and together compounding the toll on the body.
- The monsoon offers a seasonal reprieve, washing the atmosphere clean for a time, but the factories, vehicles, and construction sites that feed the crisis remain unchanged when the rains depart.
- For the city's most vulnerable, the harm is not dramatic but cumulative — respiratory problems forming in children, hearts straining in older adults, chronic conditions quietly worsening with each breath of compromised air.
On a Tuesday morning in late June, Dhaka's Air Quality Index registered 119 at 9 a.m., placing the city seventh on the global list of most polluted places that day. Only Jakarta, Kinshasa, and Lahore fared worse, their scores reaching into the 160s and 170s. A score of 119 sits within the range experts classify as 'unhealthy for sensitive groups' — a clinical phrase that carries genuine weight for children playing outdoors, elderly residents on morning walks, and anyone living with asthma or cardiovascular disease.
The scale that gives 119 its meaning extends much further into danger. Scores above 150 become unhealthy for the general population; above 200, very unhealthy; above 300, hazardous. Dhaka has not reached those extremes on this particular morning, but the city's history with poor air quality is long, and the dry winter months reliably push conditions worse. The monsoon provides temporary relief, rainfall clearing the atmosphere before the underlying sources reassert themselves.
Those sources are many: fine particulate matter, coarser particles, nitrogen dioxide from exhaust, carbon monoxide from combustion, sulfur dioxide from industry, and ground-level ozone all feed into the index. Together they create conditions that accumulate quietly in the body — respiratory problems that take root in children and persist into adulthood, hearts in older adults working harder against oxygen-depleted air, chronic illnesses compounding in those least able to absorb the strain.
Dhaka functions through all of it. Traffic moves, people go to work, the city carries on. But the air has become a chronic stressor, and the calendar alone — however welcome the rains — cannot resolve what vehicles, factories, and construction dust continue to produce.
On a Tuesday morning in late June, Dhaka woke to air thick enough to measure. At 9 a.m., the city's Air Quality Index stood at 119—a number that placed it seventh on the global list of places where the air itself had become a health hazard. Only Jakarta, Kinshasa, and Lahore ranked worse that day, with scores climbing into the 160s and 170s.
What does 119 mean? It falls into the range of 101 to 150, which air quality experts classify as "unhealthy for sensitive groups." That clinical phrase carries real weight: children playing outside, elderly people on their morning walks, anyone with asthma or a weak heart—these are the people who feel it first. Prolonged breathing of air at this level can trigger respiratory illness, strain the cardiovascular system, and compound existing health problems. The scale goes higher and darker from there. Scores between 151 and 200 cross into "unhealthy" territory for the general population. Above 201, the air becomes "very unhealthy." Beyond 301, it enters the category of "hazardous," a word that carries the weight of genuine danger.
Dhaka's struggle with air pollution is not new. The city has battled poor air quality for years, with the problem intensifying during the dry winter months when dust, vehicle emissions, and industrial pollution accumulate in stagnant air. The monsoon season brings temporary relief—rainfall clears the atmosphere and allows the city to breathe more easily. But for much of the year, residents navigate a city where the air itself is a daily concern.
The pollution comes from multiple sources, tracked by five major categories of pollutants. Fine particulate matter smaller than 2.5 microns (PM2.5) and larger particles (PM10) form the bulk of what people inhale. Nitrogen dioxide from vehicle exhaust, carbon monoxide from incomplete combustion, sulfur dioxide from industrial processes, and ground-level ozone all contribute to the overall index. Each one carries its own health signature; together, they create the conditions that make a Tuesday morning in Dhaka measurably hazardous.
The human cost accumulates quietly. Children exposed to this air over weeks and months develop respiratory problems that may persist into adulthood. Older adults find their hearts working harder to compensate for oxygen-depleted air. People already managing asthma or heart disease face the prospect of their conditions worsening. The city functions, traffic moves, people go to work—but the air itself has become a chronic stressor on the body, particularly for those least able to absorb it.
What happens next depends partly on the calendar. If the monsoon arrives on schedule and brings substantial rainfall, Dhaka's air will improve. But the underlying sources of pollution—the vehicles, the factories, the construction dust—remain. The city's air quality is not a problem that seasonal winds alone can solve.
Notable Quotes
Prolonged exposure to polluted air can cause respiratory illnesses, cardiovascular diseases and other health complications, particularly among children, older adults and people with existing health conditions.— Air quality experts
The Hearth Conversation Another angle on the story
Why does Dhaka rank seventh and not worse? Are other cities simply more polluted, or is there something different about how they measure?
Jakarta, Kinshasa, and Lahore all recorded higher scores that morning. It's not that Dhaka's air is cleaner—119 is still in the range that harms vulnerable people. It's just that on that particular Tuesday, three other cities had worse readings.
You mention the monsoon brings relief. How much relief are we talking about?
The source doesn't give exact numbers, but the pattern is clear: winter is when Dhaka's air gets trapped and pollutants accumulate. Monsoon rains wash the air clean. It's seasonal, not permanent.
Who suffers most from a score of 119?
Children, elderly people, and anyone with existing respiratory or heart problems. They're the ones who feel it first and worst. A healthy adult might not notice much difference in their daily life, but a child with asthma or an older person with heart disease will.
Is this score unusual for Dhaka, or is it typical?
The source suggests this is part of a long pattern. Dhaka has "long struggled" with air pollution. So 119 is serious, but it's not shocking for the city.
What's actually in the air that makes it unhealthy?
Five main things: tiny particles from dust and combustion, nitrogen dioxide from cars, carbon monoxide from engines, sulfur dioxide from industry, and ground-level ozone. It's a mix of sources—vehicles, factories, construction, all of it.
Can anything actually be done about this, or is it just something Dhaka has to live with?
The source doesn't address solutions. It documents the problem and the seasonal pattern. What happens next depends on whether the city addresses the underlying sources—vehicles, industry, construction—or just waits for the monsoon.