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On Tuesday morning citizens of the planet's dirtiest urban center were faced with breathing severely hazardous air that registered in the "critical" level.

Extremely High Pollution Levels

Multiple areas of the city registered an air quality index exceeding 500, which translates to a tenfold increase over the healthy threshold set by the World Health Organization.

Certain monitoring stations, levels of PM2.5 and PM10 soared to of 1800, representing 15-20x higher than healthy levels.

Pyrotechnics Ban and Recent Developments

Since 2020, officials had enforced a total prohibition on the sale and use of pyrotechnics during celebrations due to their significant contribution to the deadly pollution that covers the capital as the cold season sets in.

However recently, the newly elected local leadership petitioned the supreme court to seek a easing of the ban.

The suggestion was allowing "green crackers" – historically questioned by environmental experts as being only approximately one-third lower impact – as a compromise between "heritage and environment".

Judicial Verdict and Reality

Much to the frustration of medical and ecological advocates, the court complied with the request, mandating that green firecrackers could be ignited during designated time windows throughout the festival.

During the celebrations, there was considerable violation of the regulated periods across the capital, with insufficient regulation regarding whether the pyrotechnics being used were actually the supposedly greener type.

Numerous air quality sensors throughout Delhi showed air quality peaking around midnight to the most severe readings observed during the festival in at least recent memory.

International Consequences

The proliferation of firecrackers during the celebrations also triggered a dispute with bordering Pakistan, with representatives in Pakistan's the Punjab region partly blaming deteriorating air quality in their urban centers on pollutants originating in across the border following the events.

Chronic Environmental Crisis

Extremely elevated levels of pollution in the city have persisted as a significant problem for over a decade and a half, with the problem gradually deteriorating.

Around Diwali, the concentration of toxic particulate matter in the environment has been observed to increase dramatically to 70% higher the most severe levels ever recorded in Beijing, which was formerly viewed as the planet's dirtiest city.

Diverse Pollution Contributors

The problem in Delhi is resulting from a convergence of different contributors including transportation pollution, dust, construction activities, waste incineration and smoke from crop residue ignition in adjacent areas of neighboring agricultural zones.

Within these states, agricultural workers illegally burn crop residue to expedite field preparation, generating toxic pollution that becomes contained over the capital as winter air arrives.

Health and Economic Consequences

Both financial and medical impact on the nearly 33 million people residing in the metropolitan zone is enormous, according to various studies.

These hazardous conditions leads to increased incidence of nervous system, heart and circulatory and breathing diseases, and can even lead to malignancies.

Environmental contamination is calculated to be causing ten thousand early mortalities each year in the capital.