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Tuesday brought citizens of the world's most polluted city encountered exposed to extremely polluted air that registered in the "severe" range.

Record-Breaking Pollution Levels

Multiple areas of Delhi recorded an air quality index above 500, which translates to a tenfold increase over the recommended limit set by the World Health Organization.

Certain monitoring stations, levels of toxic particulate matter reached peaks of eighteen hundred, representing 15-20x higher than safe limits.

Firecracker Ban and Recent Developments

Since 2020, authorities had maintained a complete ban on the distribution and bursting of pyrotechnics during celebrations due to their significant contribution to the hazardous haze that blankets the capital as winter begins.

However earlier this year, the recently formed city government petitioned the supreme court to seek a relaxation of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – previously criticized by conservation groups as being only approximately one-third lower impact – as a balance between "tradition and public health".

Legal Verdict and Enforcement

To the disappointment of environmental and health advocates, the court complied with the proposal, mandating that environmentally conscious fireworks could be set off during specific periods throughout the festival.

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

Many air quality sensors throughout Delhi recorded air quality peaking around midnight to some of the worst readings recorded during the festival in at least three years.

Cross-Border Implications

The proliferation of firecrackers during Diwali also triggered a dispute with neighbouring the neighboring country, with authorities in Pakistani the Punjab region pointing to worsening pollution levels in the city of Lahore on pollutants coming from India following the celebrations.

Chronic Environmental Crisis

The dangerously high readings of air contamination in the capital have persisted as a major problem for fifteen-plus years, with the problem gradually deteriorating.

During Diwali, the levels of toxic airborne contaminants in the atmosphere has been observed to increase dramatically to 70% higher the peak levels ever documented in Beijing, which was formerly regarded as the globally most contaminated city.

Various Pollution Sources

The situation in the city is attributed to a mix of various sources including automobile exhaust, dust, development work, waste incineration and smoke from agricultural fires in neighbouring areas of farming communities.

Throughout these areas, rural residents regularly ignite agricultural waste to clear them quickly, producing dangerous haze that remains stagnant over the capital as cooler air sets in.

Health and Financial Consequences

Both financial and medical toll on the approximately 33 million inhabitants residing in the capital region is enormous, according to numerous investigations.

This pollution results in increased incidence of neurological, cardiovascular and respiratory diseases, and can potentially cause malignancies.

The pollution is calculated to be accounting for approximately 10k premature mortalities annually in the city.