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On Tuesday morning citizens of the planet's dirtiest urban center encountered breathing extremely polluted air that registered in the "severe" level.

Alarming Pollution Measurements

Various sections of Delhi registered an air quality index above 500, which equals ten times the healthy threshold recommended by the World Health Organization.

Certain monitoring stations, concentrations of PM2.5 and PM10 hit highs of 1,800, equating to fifteen to twenty times exceeding safe limits.

Fireworks Ban and Recent Changes

Beginning in 2020, officials had implemented a total prohibition on the distribution and bursting of pyrotechnics during celebrations due to their major role to the hazardous haze that engulfs the metropolis as colder weather approaches.

However in recent months, the current city leadership petitioned the supreme court to seek a modification of the restrictions.

The suggestion was allowing "eco-friendly fireworks" – which have been questioned by environmentalists as being only about 30% less polluting – as a middle ground between "cultural practices and environment".

Legal Verdict and Reality

Despite concerns of public health and environmental campaigners, judges approved the proposal, mandating that green firecrackers could be used during designated time windows throughout the celebrations.

Throughout the festival evening, there was extensive disregard of the designated hours across the metropolis, with insufficient regulation regarding whether the fireworks being used were actually the eco-friendly version.

Many recording stations throughout the capital showed air quality peaking around late evening to the most severe measurements seen during the festival in at least recent memory.

Cross-Border Consequences

The widespread use of pyrotechnics during Diwali also initiated a dispute with adjacent Pakistan, with representatives in Pakistani Punjab province pointing to worsening atmospheric conditions in Lahore on pollutants traveling from across the border following the celebrations.

Chronic Pollution Issue

Alarmingly severe readings of air contamination in the city have continued as a major challenge for fifteen-plus years, with the situation continuing to worsen.

During the festival period, the levels of dangerous airborne contaminants in the air has been found to increase dramatically to significantly exceeding the peak readings ever documented in the Chinese city, which was previously viewed as the globally most contaminated metropolis.

Diverse Contamination Factors

The problem in the capital is caused by a combination of various sources including transportation pollution, airborne particles, construction activities, rubbish burning and smoke from farm burning in adjacent states of neighboring agricultural zones.

In these regions, rural residents regularly set their fields on fire to clear them quickly, creating toxic haze that becomes contained over the city as winter air descends.

Medical and Economic Impact

Both financial and medical consequences on the roughly thirty-three million residents residing in the capital region is substantial, according to multiple studies.

This pollution causes increased incidence of nervous system, heart and circulatory and respiratory conditions, and can even lead to cancer.

The pollution is estimated to be accounting for 10,000 early deaths per year in the capital.