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On Tuesday morning inhabitants of the planet's dirtiest urban center found themselves exposed to extremely polluted air that was classified as the "severe" category.

Record-Breaking Pollution Measurements

Multiple areas of the capital registered an air quality index exceeding 500, which represents 10x the healthy threshold recommended by the global health authority.

In some locations, readings of dangerous airborne particles reached peaks of 1800, equating to fifteen to twenty times above acceptable levels.

Pyrotechnics Restrictions and Recent Policy Shifts

Beginning in 2020, authorities had enforced a complete ban on the purchase and ignition of pyrotechnics during the Festival of Lights due to their substantial impact to the hazardous pollution that blankets the city as the cold season approaches.

However earlier this year, the current local administration petitioned the supreme court to seek a modification of the ban.

Officials advocated for allowing "green crackers" – previously questioned by environmental experts as being only roughly 30 percent less polluting – as a middle ground between "tradition and public health".

Judicial Ruling and Reality

To the disappointment of environmental and health campaigners, the court approved the request, mandating that eco-friendly pyrotechnics could be used during specific periods throughout the celebrations.

Throughout the festival evening, there was considerable violation of the time restrictions across the city, with little regulation regarding whether the firecrackers being used were actually the eco-friendly type.

Several recording stations throughout the city recorded air quality spiking around midnight to the most severe levels observed during the festival in at least recent memory.

Cross-Border Consequences

Extensive ignition of pyrotechnics during the celebrations also sparked a controversy with adjacent the neighboring country, with representatives in Pakistan's Punjab partially attributing deteriorating air quality in their urban centers on hazardous particles originating in neighboring India following the festivities.

Long-Standing Pollution Issue

Alarmingly severe concentrations of pollution in the city have remained as a serious challenge for more than 15 years, with the situation showing no improvement.

During the festival period, the concentration of hazardous particles in the atmosphere has been found to increase dramatically to 70% higher the worst records ever recorded in the Chinese city, which was formerly viewed as the world's most polluted city.

Multiple Pollution Sources

This crisis in Delhi is attributed to a convergence of different contributors including automobile exhaust, dust, development work, rubbish burning and pollutants from agricultural fires in adjacent states of farming communities.

Within these states, farmers regularly ignite agricultural waste to expedite field preparation, creating toxic smog that remains stagnant over the city as cooler air sets in.

Public Health and Financial Toll

Public health and economic impact on the nearly 33 million residents residing in the metropolitan zone is significant, according to numerous investigations.

This pollution causes high levels of neurological, cardiovascular and lung disorders, and can even lead to oncological diseases.

Air quality crisis is estimated to be responsible for ten thousand early deaths each year in Delhi.