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Tuesday brought inhabitants of this heavily contaminated metropolis found themselves inhaling severely hazardous air that registered in the "alarming" level.

Record-Breaking Pollution Readings

Multiple areas of Delhi registered an air quality index exceeding 500, which equals a tenfold increase over the healthy level recommended by the WHO.

Particular areas, concentrations of PM2.5 and PM10 reached peaks of 1,800, amounting to 15 to 20 times above safe levels.

Firecracker Prohibition and New Changes

Since 2020, authorities had maintained a complete ban on the sale and use of pyrotechnics during celebrations due to their major role to the hazardous haze that covers the metropolis as winter sets in.

Yet in recent months, the newly elected local administration approached the judicial authority to propose a easing of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – historically questioned by conservation groups as being only approximately one-third lower impact – as a balance between "tradition and ecological concerns".

Judicial Ruling and Implementation

To the disappointment of public health and environmental activists, the court approved the appeal, mandating that environmentally conscious fireworks could be used during limited hours throughout the festival.

During the celebrations, there was considerable violation of the regulated periods across the capital, with little monitoring regarding whether the pyrotechnics being used were actually the eco-friendly type.

Several air quality sensors throughout the capital recorded contamination spiking around the night hours to some of the worst readings seen during celebrations in at least three years.

Cross-Border Consequences

The widespread use of fireworks during the celebrations also initiated a blame game with neighbouring the neighboring country, with representatives in Pakistan's Punjab province partially attributing declining atmospheric conditions in the city of Lahore on contaminants coming from neighboring India following the festivities.

Persistent Pollution Issue

Alarmingly severe levels of pollution in the capital have persisted as a serious challenge for over a decade and a half, with the problem continuing to worsen.

Around Diwali, the amount of hazardous particles in the air has been found to spike to significantly exceeding the peak levels ever measured in China's capital, which was formerly regarded as the planet's dirtiest urban center.

Multiple Pollution Factors

This crisis in the capital is resulting from a combination of multiple factors including automobile exhaust, airborne particles, development work, waste incineration and haze from crop residue ignition in nearby areas of neighboring agricultural zones.

In these regions, farmers regularly burn crop residue to expedite field preparation, producing hazardous pollution that becomes contained over the metropolitan area as cooler air sets in.

Health and Economic Toll

The economic and health toll on the approximately 33 million residents residing in the Delhi area is substantial, according to multiple research.

This pollution leads to elevated rates of neurological, cardiovascular and breathing conditions, and can even lead to malignancies.

The pollution is projected to be accounting for approximately 10k premature deaths each year in Delhi.