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Tuesday brought inhabitants of the planet's dirtiest urban center were faced with inhaling severely hazardous air that was classified as the "severe" level.

Alarming Air Quality Measurements

Various sections of Delhi recorded an AQI above 500, which represents a tenfold increase over the recommended level recommended by the World Health Organization.

Particular areas, readings of toxic particulate matter soared to of 1,800, amounting to fifteen to twenty times higher than acceptable levels.

Fireworks Prohibition and Current Developments

Since 2020, the government had maintained a comprehensive restriction on the purchase and ignition of fireworks during Diwali due to their major role to the dangerous smog that covers the capital as colder weather approaches.

Nevertheless in recent months, the current city administration petitioned the highest court to seek a easing of the prohibition.

They proposed allowing "eco-friendly fireworks" – which have been doubted by conservation groups as being only about 30% lower impact – as a balance between "heritage and ecological concerns".

Judicial Verdict and Implementation

Despite concerns of public health and environmental campaigners, the court agreed to the proposal, mandating that environmentally conscious fireworks could be ignited during limited periods throughout the Diwali.

On Monday night, there was extensive disregard of the designated hours across the city, with insufficient monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly variety.

Many monitoring devices throughout Delhi registered air quality spiking around late evening to some of the worst levels seen during celebrations in at least three years.

Cross-Border Consequences

The widespread use of pyrotechnics during the celebrations also sparked a blame game with neighbouring the neighboring country, with authorities in Pakistan's Punjab partially attributing deteriorating pollution levels in Lahore on contaminants coming from India following the festivities.

Persistent Pollution Problem

Extremely elevated readings of atmospheric toxins in the capital have continued as a major challenge for fifteen-plus years, with the situation gradually deteriorating.

Near Diwali, the levels of toxic particulate matter in the environment has been documented to shoot up to seventy percent above the most severe levels ever measured in the Chinese city, which was formerly regarded as the globally most contaminated city.

Diverse Contamination Sources

The problem in the capital is resulting from a mix of various sources including heavy vehicle emissions, construction debris, building projects, garbage fires and pollutants from agricultural fires in nearby states of farming communities.

In these regions, farmers illegally burn crop residue to prepare for next season, creating hazardous smog that then gets trapped over the metropolitan area as cooler air descends.

Medical and Economic Toll

Both financial and medical toll on the nearly 33 million people residing in the metropolitan zone is enormous, according to various investigations.

This pollution results in high levels of nervous system, heart and circulatory and lung conditions, and can even lead to oncological diseases.

Environmental contamination is calculated to be responsible for ten thousand untimely deaths each year in the capital.