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As Tuesday dawned inhabitants of the planet's dirtiest urban center were faced with inhaling dangerously toxic air that registered in the "critical" level.

Record-Breaking Pollution Levels

Several parts of the city registered an air quality index above 500, which equals a tenfold increase over the recommended level established by the WHO.

Certain monitoring stations, levels of dangerous airborne particles soared to of 1800, equating to 15-20x above healthy levels.

Firecracker Prohibition and Current Changes

Since 2020, officials had enforced a complete ban on the sale and use of fireworks during Diwali due to their major role to the dangerous pollution that covers the city as colder weather sets in.

However recently, the recently formed city government appealed to the highest court to seek a easing of the prohibition.

They proposed allowing "eco-friendly fireworks" – previously doubted by environmental experts as being only roughly 30 percent lower impact – as a middle ground between "cultural practices and ecological concerns".

Court Verdict and Reality

Much to the frustration of environmental and health activists, judicial authorities approved the request, specifying that green firecrackers could be set off during limited periods throughout the festival.

During the celebrations, there was considerable flouting of the regulated periods across the capital, with minimal monitoring regarding whether the firecrackers being used were actually the eco-friendly variety.

Numerous recording stations throughout Delhi recorded contamination reaching highest levels around midnight to extremely hazardous readings seen during celebrations in at least recent memory.

Regional Implications

Extensive ignition of fireworks during the celebrations also triggered a blame game with bordering the neighboring country, with representatives in Pakistani the Punjab region pointing to declining air quality in the city of Lahore on pollutants coming from across the border following the festivities.

Long-Standing Environmental Problem

Extremely elevated readings of atmospheric toxins in the city have persisted as a serious issue for more than 15 years, with the problem gradually deteriorating.

During the festival period, the levels of dangerous airborne contaminants in the atmosphere has been observed to increase dramatically to seventy percent above the worst readings ever documented in Beijing, which was formerly considered as the globally most contaminated urban center.

Multiple Pollution Sources

The situation in Delhi is attributed to a mix of multiple factors including transportation pollution, airborne particles, development work, garbage fires and pollutants from crop residue ignition in neighbouring areas of neighboring agricultural zones.

In these regions, rural residents routinely ignite agricultural waste to clear them quickly, creating dangerous haze that then gets trapped over the metropolitan area as colder air descends.

Medical and Financial Toll

Both financial and medical impact on the approximately 33 million people calling home the Delhi area is substantial, according to various studies.

These hazardous conditions leads to increased incidence of neurological, cardiovascular and breathing diseases, and can potentially cause oncological diseases.

Air quality crisis is estimated to be responsible for approximately 10k premature mortalities per year in the capital.