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Tuesday brought residents of the world's most polluted city were faced with exposed to severely hazardous air that registered in the "alarming" range.

Record-Breaking Air Quality Measurements

Various sections of the capital registered an AQI exceeding 500, which translates to 10x the safe level established by the global health authority.

In some locations, levels of PM2.5 and PM10 reached peaks of 1,800, amounting to 15-20x higher than healthy levels.

Pyrotechnics Ban and New Developments

Since 2020, officials had enforced a total prohibition on the sale and use of fireworks during Diwali due to their significant contribution to the hazardous pollution that blankets the metropolis as winter approaches.

Nevertheless recently, the current local government appealed to the judicial authority to seek a easing of the restrictions.

The suggestion was allowing "green crackers" – historically questioned by environmental experts as being only roughly 30 percent less polluting – as a balance between "tradition and ecological concerns".

Court Ruling and Enforcement

To the disappointment of environmental and health activists, judges approved the appeal, stipulating that green firecrackers could be set off during designated hours throughout the festival.

Throughout the festival evening, there was considerable violation of the time restrictions across the metropolis, with minimal monitoring regarding whether the fireworks being used were actually the eco-friendly version.

Many air quality sensors throughout the capital recorded air quality peaking around late evening to some of the worst levels observed during Diwali in at least recent memory.

Regional Effects

The widespread use of firecrackers during the festival also triggered a dispute with neighbouring the neighboring country, with officials in Pakistan's the Punjab region partly blaming deteriorating pollution levels in Lahore on pollutants traveling from neighboring India following the festivities.

Long-Standing Pollution Problem

Extremely elevated concentrations of pollution in the capital have continued as a significant problem for fifteen-plus years, with the problem showing no improvement.

During the festival period, the concentration of toxic airborne contaminants in the environment has been found to increase dramatically to significantly exceeding the most severe levels ever measured in China's capital, which was formerly viewed as the globally most contaminated metropolis.

Diverse Pollution Contributors

The situation in the city is resulting from a mix of various sources including automobile exhaust, construction debris, construction activities, rubbish burning and smoke from crop residue ignition in nearby states of Punjab and Haryana.

Within these states, agricultural workers regularly burn crop residue to expedite field preparation, creating dangerous pollution that remains stagnant over the city as winter air sets in.

Health and Financial Consequences

Public health and economic toll on the nearly 33 million inhabitants calling home the capital region is enormous, according to multiple studies.

These hazardous conditions results in increased incidence of nervous system, cardiovascular and respiratory conditions, and can even lead to cancer.

The pollution is projected to be causing approximately 10k untimely fatalities annually in Delhi.