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Tuesday brought inhabitants of this heavily contaminated metropolis encountered breathing dangerously toxic air that registered in the "severe" category.

Alarming Pollution Levels

Multiple areas of Delhi registered an pollution measurement exceeding 500, which translates to a tenfold increase over the safe level recommended by the WHO.

Certain monitoring stations, levels of PM2.5 and PM10 hit highs of 1800, equating to 15 to 20 times exceeding healthy levels.

Pyrotechnics Prohibition and New Developments

Since 2020, the government had implemented a comprehensive restriction on the distribution and bursting of fireworks during celebrations due to their substantial impact to the dangerous smog that blankets the metropolis as winter sets in.

Yet earlier this year, the recently formed city leadership petitioned the supreme court to request a modification of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – previously doubted by conservation groups as being only about 30% reduced emissions – as a compromise between "tradition and environment".

Court Ruling and Enforcement

Much to the frustration of environmental and health activists, judicial authorities complied with the proposal, stipulating that eco-friendly pyrotechnics could be ignited during specific periods throughout the festival.

During the celebrations, there was widespread flouting of the time restrictions across the city, with insufficient enforcement regarding whether the fireworks being used were actually the more environmentally friendly variety.

Several monitoring devices throughout the capital registered pollution reaching highest levels around midnight to extremely hazardous readings seen during the festival in at least recent memory.

International Effects

The proliferation of firecrackers during Diwali also initiated a controversy with adjacent the neighboring country, with representatives in Pakistani Punjab province partially attributing worsening air quality in their urban centers on contaminants traveling from India following the celebrations.

Persistent Pollution Problem

The dangerously high readings of pollution in the capital have remained as a major problem for more than 15 years, with the problem gradually deteriorating.

Around Diwali, the levels of dangerous particulate matter in the atmosphere has been observed to increase dramatically to seventy percent above the peak readings ever recorded in China's capital, which was previously considered as the planet's dirtiest city.

Various Contamination Contributors

This crisis in Delhi is resulting from a combination of different contributors including automobile exhaust, dust, construction activities, garbage fires and pollutants from agricultural fires in neighbouring areas of farming communities.

Within these states, farmers routinely burn crop residue to expedite field preparation, producing hazardous pollution that remains stagnant over the metropolitan area as colder air arrives.

Medical and Economic Impact

Both financial and medical impact on the approximately 33 million residents residing in the capital region is enormous, according to multiple investigations.

The contaminated air results in elevated rates of neurological, cardiovascular and lung disorders, and can even lead to cancer.

Environmental contamination is calculated to be causing 10,000 premature mortalities per year in Delhi.