Delhi’s air pollution has turned into a chronic public health emergency that affects everyone who steps outside to breathe. What was once dismissed as a seasonal inconvenience now resembles a slow, invisible disaster that cuts across age, class and occupation, steadily damaging bodies and shortening lives.
Each winter, the Air Quality Index sinks into “very poor” or “severe” zones, with toxic particles far beyond health-based limits. Even a healthy adult in such air inhales pollutants deep into the lungs and bloodstream, inflaming blood vessels, irritating airways and straining the heart. Hospitals see a consistent rise in cough, breathlessness, chest pain, asthma attacks and cardiac emergencies whenever pollution peaks. Doctors increasingly describe the situation as life-threatening, because it affects those with no prior illness and raises long-term risks of stroke, heart disease, lung disorders and certain cancers.
For ordinary residents, the emergency is part of daily life. Morning walks are abandoned, outdoor work becomes exhausting, and burning eyes, headaches and fatigue appear after only brief exposure. Those who can afford it withdraw into air-purified homes and cars, while those relying on public transport, daily wage jobs or street-based livelihoods absorb the full burden of the smog.
The Social Determinants of Health (SDH) framework helps explain why this crisis extends far beyond individual behavior. Health is shaped by the conditions in which people live, work and travel, not just by personal choices. When the very air is toxic, health becomes determined by urban planning, transport systems, waste handling, energy sources and enforcement of environmental laws. Pollution in Delhi operates as a structural driver of disease and inequality, where exposure depends on residence near highways or landfills, travel in crowded or open vehicles, or occupations that require outdoor labour. These are not issues that individuals can fix with masks and home purifiers, which is why the crisis demands policy-level solutions, not private coping strategies.
Although pollution affects everyone, its impact is unequal. Children are among the most vulnerable because their lungs and brains are still developing and they inhale more air relative to body weight. Prolonged exposure reduces lung capacity, increases infections and sets the stage for chronic illness later in life. Older adults with weaker respiratory and cardiac function face a heightened risk of heart attacks and severe breathing distress. People with asthma, COPD, heart disease or diabetes see dangerous spikes in symptoms during smog episodes. Pregnant women and unborn babies face increased risks of complications and low birth weight. Low-income communities and outdoor workers—street vendors, traffic police, delivery staff, sanitation and construction workers—spend the longest hours in polluted air with the least protection. Delhi’s air crisis is therefore not only a health issue but a social injustice, where those contributing least to emissions bear the greatest suffering.
Through the lens of public health, Delhi’s toxic air is shaping the future by eroding health across the population. It is crowding hospitals, harming productivity and weakening a generation before it enters adulthood. Treating it as an emergency means moving beyond short-term bans and fragmented measures towards sustained action on transportation, waste burning, industrial and construction emissions, and environment-centred urban design.
As long as breathing feels like a daily gamble, the right to health in Delhi remains compromised. Recognising who is most affected—and why—should compel governments and citizens alike to treat clean air not as a privilege, but as a basic and non-negotiable condition for a livable city.
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*Student, Master’s of Public Health, B.R. Ambedkar University, Delhi
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