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Tuesday brought inhabitants of the planet's dirtiest urban center encountered breathing dangerously toxic air that registered in the "severe" category.

Extremely High Air Quality Levels

Several parts of the city showed an AQI over 500, which equals a tenfold increase over the healthy limit set by the WHO.

Certain monitoring stations, concentrations of PM2.5 and PM10 hit highs of 1,800, amounting to 15 to 20 times exceeding safe levels.

Firecracker Prohibition and New Changes

For the past four years, authorities had enforced a total prohibition on the sale and use of pyrotechnics during celebrations due to their major role to the dangerous haze that covers the capital as winter approaches.

Nevertheless in recent months, the current regional leadership approached the judicial authority to seek a easing of the prohibition.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been criticized by conservation groups as being only roughly 30 percent lower impact – as a compromise between "cultural practices and environment".

Court Verdict and Reality

To the disappointment of environmental and health advocates, the court approved the appeal, stipulating that eco-friendly pyrotechnics could be set off during specific time windows throughout the celebrations.

During the celebrations, there was widespread violation of the regulated periods across the metropolis, with minimal enforcement regarding whether the firecrackers being used were actually the supposedly greener variety.

Several recording stations throughout Delhi recorded pollution spiking around the night hours to extremely hazardous levels observed during celebrations in at least three years.

Regional Consequences

The widespread use of pyrotechnics during the festival also initiated a controversy with adjacent Pakistan, with authorities in Pakistani the Punjab region partially attributing declining atmospheric conditions in their urban centers on pollutants coming from neighboring India following the events.

Chronic Pollution Issue

Alarmingly severe levels of atmospheric toxins in Delhi have persisted as a significant challenge for fifteen-plus years, with the situation showing no improvement.

During celebratory seasons, the amount of hazardous particulate matter in the air has been documented to spike to significantly exceeding the peak records ever documented in the Chinese city, which was once regarded as the world's most polluted urban center.

Various Pollution Factors

This crisis in the capital is attributed to a convergence of different contributors including automobile exhaust, dust, construction activities, rubbish burning and haze from agricultural fires in neighbouring regions of neighboring agricultural zones.

Within these states, rural residents regularly burn crop residue to expedite field preparation, creating dangerous pollution that remains stagnant over the capital as colder air arrives.

Health and Economic Toll

Both financial and medical impact on the roughly thirty-three million residents residing in the capital region is enormous, according to various studies.

The contaminated air results in increased incidence of neurological, cardiovascular and breathing conditions, and can even lead to malignancies.

Air quality crisis is calculated to be responsible for approximately 10k early deaths annually in Delhi.