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As Tuesday dawned citizens of this heavily contaminated metropolis encountered exposed to severely hazardous air that registered in the "severe" level.

Record-Breaking Air Quality Levels

Several parts of Delhi recorded an air quality index over 500, which equals ten times the safe threshold established by the global health authority.

In some locations, readings of toxic particulate matter soared to of 1,800, equating to 15 to 20 times exceeding safe levels.

Pyrotechnics Prohibition and New Policy Shifts

For the past four years, officials had implemented a comprehensive restriction on the distribution and bursting of fireworks during the Festival of Lights due to their major role to the hazardous haze that engulfs the capital as winter begins.

Nevertheless in recent months, the recently formed regional leadership approached the judicial authority to request a easing of the ban.

Officials advocated for allowing "eco-friendly fireworks" – which have been doubted by environmental experts as being only roughly 30 percent lower impact – as a balance between "heritage and public health".

Legal Verdict and Implementation

To the disappointment of environmental and health campaigners, judges complied with the proposal, specifying that eco-friendly pyrotechnics could be ignited during specific periods throughout the celebrations.

During the celebrations, there was extensive flouting of the regulated periods across the city, with little regulation regarding whether the pyrotechnics being used were actually the eco-friendly version.

Several monitoring devices throughout Delhi registered contamination reaching highest levels around late evening to the most severe readings seen during the festival in at least three years.

International Effects

Extensive ignition of firecrackers during the festival also initiated a blame game with neighbouring the neighboring country, with officials in Pakistan's Punjab province partially attributing deteriorating atmospheric conditions in the city of Lahore on hazardous particles traveling from neighboring India following the festivities.

Long-Standing Environmental Crisis

Alarmingly severe concentrations of air contamination in the city have continued as a major challenge for over a decade and a half, with the problem showing no improvement.

During celebratory seasons, the concentration of toxic particulate matter in the environment has been observed to increase dramatically to seventy percent above the most severe levels ever recorded in the Chinese city, which was once considered as the world's most polluted city.

Diverse Pollution Contributors

This crisis in the capital is attributed to a mix of multiple factors including transportation pollution, dust, building projects, waste incineration and haze from crop residue ignition in neighbouring areas of farming communities.

In these regions, agricultural workers routinely set their fields on fire to prepare for next season, creating hazardous haze that remains stagnant over the metropolitan area as cooler air arrives.

Public Health and Economic Toll

Both financial and medical impact on the approximately 33 million residents residing in the capital region is substantial, according to various studies.

These hazardous conditions causes elevated rates of nervous system, heart and circulatory and breathing diseases, and can even lead to malignancies.

The pollution is estimated to be accounting for ten thousand premature mortalities annually in the city.