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Tuesday brought citizens of the planet's dirtiest urban center were faced with inhaling extremely polluted air that fell into the "severe" category.

Extremely High Pollution Measurements

Multiple areas of the city registered an air quality index above 500, which equals a tenfold increase over the healthy threshold recommended by the global health authority.

In some locations, readings of dangerous airborne particles soared to of 1,800, amounting to 15 to 20 times above safe levels.

Firecracker Restrictions and New Developments

Beginning in 2020, officials had implemented a complete ban on the sale and use of firecrackers during celebrations due to their substantial impact to the hazardous haze that engulfs the city as the cold season approaches.

However in recent months, the newly elected regional government petitioned the highest court to request a easing of the restrictions.

They proposed allowing "eco-friendly fireworks" – which have been criticized by environmental experts as being only roughly 30 percent reduced emissions – as a compromise between "heritage and public health".

Legal Verdict and Enforcement

Despite concerns of medical and ecological activists, judges agreed to the request, mandating that eco-friendly pyrotechnics could be ignited during specific time windows throughout the festival.

Throughout the festival evening, there was considerable disregard of the time restrictions across the capital, with minimal regulation regarding whether the fireworks being used were actually the more environmentally friendly variety.

Many air quality sensors throughout the capital showed pollution peaking around the night hours to some of the worst levels observed during celebrations in at least the past three years.

Regional Effects

Extensive ignition of firecrackers during the celebrations also initiated a controversy with adjacent the neighboring country, with authorities in Pakistan's Punjab partly blaming worsening pollution levels in the city of Lahore on hazardous particles coming from India following the events.

Long-Standing Pollution Issue

The dangerously high readings of pollution in the city have remained as a major problem for fifteen-plus years, with the situation continuing to worsen.

During Diwali, the amount of toxic particles in the atmosphere has been observed to shoot up to significantly exceeding the worst readings ever recorded in China's capital, which was formerly considered as the world's most polluted urban center.

Multiple Contamination Contributors

The problem in Delhi is caused by a combination of different contributors including transportation pollution, dust, development work, rubbish burning and smoke from crop residue ignition in neighbouring regions of farming communities.

In these regions, farmers regularly ignite agricultural waste to prepare for next season, producing hazardous smog that then gets trapped over the city as colder air sets in.

Public Health and Financial Toll

Public health and economic consequences on the roughly thirty-three million inhabitants calling home the metropolitan zone is substantial, according to various investigations.

These hazardous conditions leads to elevated rates of neurological, heart and circulatory and respiratory diseases, and can even lead to cancer.

Air quality crisis is projected to be responsible for 10,000 early mortalities annually in the capital.