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As Tuesday dawned inhabitants of this heavily contaminated metropolis were faced with inhaling extremely polluted air that was classified as the "critical" category.

Alarming Air Quality Levels

Several parts of Delhi showed an pollution measurement above 500, which represents 10x the recommended level set by the WHO.

In some locations, concentrations of toxic particulate matter hit highs of eighteen hundred, representing 15 to 20 times exceeding acceptable limits.

Fireworks Ban and New Policy Shifts

Since 2020, officials had maintained a complete ban on the sale and use of fireworks during celebrations due to their substantial impact to the hazardous pollution that blankets the metropolis as the cold season sets in.

Yet earlier this year, the current local leadership approached the highest court to seek a easing of the ban.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been criticized by environmental experts as being only roughly 30 percent less polluting – as a compromise between "cultural practices and ecological concerns".

Court Decision and Reality

To the disappointment of environmental and health activists, judicial authorities complied with the proposal, stipulating that eco-friendly pyrotechnics could be used during designated hours throughout the Diwali.

On Monday night, there was widespread disregard of the regulated periods across the city, with little enforcement regarding whether the firecrackers being used were actually the more environmentally friendly type.

Numerous recording stations throughout Delhi recorded contamination peaking around late evening to extremely hazardous measurements recorded during Diwali in at least three years.

Regional Implications

The widespread use of pyrotechnics during Diwali also sparked a blame game with adjacent the neighboring country, with officials in Pakistani Punjab partially attributing worsening atmospheric conditions in the city of Lahore on pollutants originating in across the border following the festivities.

Chronic Environmental Problem

The dangerously high readings of air contamination in Delhi have continued as a major issue for fifteen-plus years, with the problem continuing to worsen.

Around Diwali, the amount of dangerous particulate matter in the air has been found to shoot up to significantly exceeding the most severe records ever measured in the Chinese city, which was previously considered as the globally most contaminated urban center.

Multiple Pollution Sources

The problem in the capital is caused by a mix of different contributors including automobile exhaust, construction debris, development work, waste incineration and pollutants from agricultural fires in nearby regions of Punjab and Haryana.

Within these states, agricultural workers routinely ignite agricultural waste to prepare for next season, generating toxic haze that becomes contained over the metropolitan area as cooler air descends.

Medical and Economic Toll

The economic and health consequences on the nearly 33 million people residing in the metropolitan zone is significant, according to various research.

These hazardous conditions causes high levels of neurological, heart and circulatory and respiratory diseases, and can potentially cause malignancies.

The pollution is projected to be causing 10,000 early deaths annually in the capital.