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As Tuesday dawned inhabitants of the planet's dirtiest urban center found themselves breathing severely hazardous air that fell into the "critical" category.

Extremely High Pollution Levels

Multiple areas of Delhi showed an pollution measurement above 500, which represents a tenfold increase over the safe limit established by the global health authority.

Certain monitoring stations, concentrations of dangerous airborne particles hit highs of eighteen hundred, equating to 15-20x above acceptable levels.

Firecracker Ban and Current Changes

For the past four years, the government had maintained a total prohibition on the sale and use of pyrotechnics during celebrations due to their substantial impact to the hazardous smog that blankets the metropolis as the cold season begins.

Nevertheless in recent months, the newly elected city administration appealed to the supreme court to propose a modification of the prohibition.

They proposed allowing "green crackers" – which have been doubted by conservation groups as being only approximately one-third reduced emissions – as a middle ground between "tradition and ecological concerns".

Legal Verdict and Enforcement

Despite concerns of public health and environmental advocates, the court approved the appeal, specifying that environmentally conscious fireworks could be ignited during specific time windows throughout the celebrations.

During the celebrations, there was considerable flouting of the designated hours across the metropolis, with insufficient regulation regarding whether the firecrackers being used were actually the supposedly greener type.

Many monitoring devices throughout the city registered air quality reaching highest levels around the night hours to the most severe readings seen during Diwali in at least three years.

International Effects

The proliferation of pyrotechnics during Diwali also sparked a dispute with bordering the neighboring country, with officials in Pakistani Punjab partially attributing declining pollution levels in their urban centers on hazardous particles coming from across the border following the events.

Chronic Environmental Issue

The dangerously high levels of air contamination in Delhi have continued as a major issue for over a decade and a half, with the situation showing no improvement.

Near the festival period, the levels of hazardous particulate matter in the environment has been documented to shoot up to 70% higher the most severe readings ever recorded in Beijing, which was once viewed as the planet's dirtiest urban center.

Diverse Contamination Factors

The situation in the capital is caused by a combination of multiple factors including heavy vehicle emissions, airborne particles, construction activities, garbage fires and smoke from crop residue ignition in neighbouring regions of farming communities.

Throughout these areas, rural residents routinely set their fields on fire to expedite field preparation, producing toxic haze that remains stagnant over the capital as colder air sets in.

Public Health and Economic Toll

Both financial and medical consequences on the roughly thirty-three million residents living in the capital region is enormous, according to various studies.

These hazardous conditions causes increased incidence of nervous system, heart and circulatory and breathing diseases, and can result in oncological diseases.

The pollution is calculated to be accounting for approximately 10k premature fatalities each year in the city.