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As Tuesday dawned citizens of the planet's dirtiest urban center found themselves exposed to severely hazardous air that fell into the "severe" range.

Alarming Pollution Measurements

Various sections of Delhi showed an pollution measurement above 500, which equals a tenfold increase over the healthy threshold established by the World Health Organization.

Certain monitoring stations, levels of PM2.5 and PM10 reached peaks of 1,800, representing fifteen to twenty times above healthy levels.

Pyrotechnics Restrictions and Recent Developments

Since 2020, officials had implemented a total prohibition on the distribution and bursting of pyrotechnics during Diwali due to their major role to the hazardous haze that covers the capital as colder weather approaches.

However recently, the current local administration appealed to the judicial authority to seek a easing of the ban.

They proposed allowing "green crackers" – historically doubted by environmental experts as being only about 30% less polluting – as a middle ground between "heritage and ecological concerns".

Legal Decision and Enforcement

Much to the frustration of environmental and health advocates, the court approved the appeal, mandating that green firecrackers could be ignited during designated periods throughout the celebrations.

On Monday night, there was extensive flouting of the time restrictions across the city, with little monitoring regarding whether the firecrackers being used were actually the more environmentally friendly version.

Numerous air quality sensors throughout the city registered air quality peaking around the night hours to the most severe levels recorded during the festival in at least three years.

International Consequences

Extensive ignition of fireworks during the festival also initiated a dispute with adjacent the neighboring country, with officials in Pakistan's Punjab province partly blaming worsening pollution levels in Lahore on contaminants traveling from across the border following the events.

Long-Standing Pollution Problem

Extremely elevated concentrations of atmospheric toxins in Delhi have remained as a major issue for over a decade and a half, with the problem gradually deteriorating.

Near celebratory seasons, the levels of dangerous airborne contaminants in the air has been found to spike to significantly exceeding the most severe levels ever documented in the Chinese city, which was previously considered as the planet's dirtiest city.

Diverse Contamination Factors

This crisis in the capital is caused by a convergence of multiple factors including automobile exhaust, dust, development work, waste incineration and pollutants from crop residue ignition in nearby areas of farming communities.

In these regions, rural residents routinely set their fields on fire to clear them quickly, generating dangerous haze that then gets trapped over the capital as colder air descends.

Medical and Economic Impact

Both financial and medical impact on the nearly 33 million residents living in the metropolitan zone is significant, according to multiple research.

These hazardous conditions causes high levels of nervous system, cardiovascular and lung diseases, and can even lead to malignancies.

Environmental contamination is projected to be responsible for 10,000 premature deaths each year in Delhi.