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Tuesday brought inhabitants of the planet's dirtiest urban center found themselves breathing dangerously toxic air that registered in the "severe" category.

Extremely High Air Quality Readings

Various sections of the city registered an air quality index exceeding 500, which translates to a tenfold increase over the healthy level recommended by the WHO.

Particular areas, levels of toxic particulate matter soared to of 1,800, equating to fifteen to twenty times exceeding safe standards.

Fireworks Restrictions and Current Changes

Beginning in 2020, authorities had maintained a total prohibition on the sale and use of fireworks during celebrations due to their major role to the dangerous smog that engulfs the capital as colder weather sets in.

Yet recently, the recently formed city leadership petitioned the supreme court to propose a relaxation of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – historically criticized by conservation groups as being only about 30% lower impact – as a compromise between "tradition and public health".

Judicial Verdict and Enforcement

Much to the frustration of environmental and health activists, judges agreed to the proposal, stipulating that eco-friendly pyrotechnics could be ignited during specific time windows throughout the festival.

During the celebrations, there was considerable violation of the regulated periods across the city, with little regulation regarding whether the fireworks being used were actually the eco-friendly version.

Many monitoring devices throughout the capital registered pollution peaking around the night hours to the most severe levels observed during the festival in at least three years.

International Implications

The proliferation of pyrotechnics during the celebrations also triggered a controversy with adjacent Pakistan, with authorities in Pakistan's Punjab province partly blaming worsening atmospheric conditions in the city of Lahore on hazardous particles coming from India following the festivities.

Long-Standing Environmental Issue

Alarmingly severe concentrations of atmospheric toxins in the capital have remained as a serious problem for more than 15 years, with the condition gradually deteriorating.

Around the festival period, the concentration of hazardous particulate matter in the atmosphere has been observed to spike to 70% higher the peak records ever documented in China's capital, which was once considered as the globally most contaminated city.

Various Contamination Sources

This crisis in Delhi is caused by a convergence of multiple factors including transportation pollution, airborne particles, building projects, garbage fires and haze from farm burning in adjacent states of farming communities.

Throughout these areas, agricultural workers illegally ignite agricultural waste to prepare for next season, producing toxic pollution that then gets trapped over the city as cooler air arrives.

Medical and Economic Consequences

The economic and health consequences on the approximately 33 million inhabitants calling home the capital region is enormous, according to multiple investigations.

This pollution results in elevated rates of neurological, cardiovascular and respiratory conditions, and can potentially cause malignancies.

The pollution is projected to be responsible for 10,000 untimely mortalities annually in Delhi.