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Tuesday brought residents of this heavily contaminated metropolis were faced with exposed to dangerously toxic air that was classified as the "severe" level.

Extremely High Air Quality Levels

Multiple areas of Delhi recorded an AQI exceeding 500, which translates to ten times the healthy limit set by the World Health Organization.

In some locations, concentrations of dangerous airborne particles soared to of 1800, amounting to 15 to 20 times higher than healthy levels.

Pyrotechnics Restrictions and Recent Policy Shifts

Beginning in 2020, officials had enforced a total prohibition on the purchase and ignition of pyrotechnics during Diwali due to their major role to the deadly smog that covers the metropolis as winter approaches.

Nevertheless earlier this year, the newly elected city administration appealed to the judicial authority to seek a relaxation of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – which have been doubted by environmentalists as being only approximately one-third reduced emissions – as a compromise between "heritage and environment".

Legal Verdict and Reality

Much to the frustration of medical and ecological advocates, judicial authorities agreed to the request, specifying that eco-friendly pyrotechnics could be used during designated hours throughout the Diwali.

On Monday night, there was extensive disregard of the designated hours across the capital, with little enforcement regarding whether the firecrackers being used were actually the supposedly greener type.

Many monitoring devices throughout the capital recorded pollution peaking around late evening to extremely hazardous readings observed during the festival in at least three years.

Cross-Border Effects

The widespread use of pyrotechnics during the festival also initiated a controversy with neighbouring the neighboring country, with representatives in Pakistan's Punjab partially attributing deteriorating pollution levels in their urban centers on hazardous particles coming from neighboring India following the celebrations.

Long-Standing Environmental Crisis

Extremely elevated levels of pollution in the capital have persisted as a significant challenge for fifteen-plus years, with the situation continuing to worsen.

Near the festival period, the amount of dangerous airborne contaminants in the environment has been observed to increase dramatically to seventy percent above the peak records ever measured in Beijing, which was formerly regarded as the globally most contaminated metropolis.

Diverse Pollution Factors

This crisis in the city is attributed to a convergence of multiple factors including automobile exhaust, dust, building projects, waste incineration and smoke from agricultural fires in adjacent regions of farming communities.

Throughout these areas, agricultural workers routinely ignite agricultural waste to prepare for next season, producing hazardous haze that remains stagnant over the city as cooler air descends.

Medical and Financial Impact

Public health and economic impact on the approximately 33 million people living in the metropolitan zone is enormous, according to numerous research.

These hazardous conditions causes elevated rates of neurological, heart and circulatory and respiratory conditions, and can even lead to malignancies.

Air quality crisis is estimated to be responsible for ten thousand untimely mortalities per year in the capital.