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On Tuesday morning inhabitants of the world's most polluted city were faced with inhaling severely hazardous air that fell into the "severe" range.

Alarming Pollution Levels

Various sections of the city registered an air quality index over 500, which represents 10x the safe threshold recommended by the WHO.

In some locations, readings of toxic particulate matter soared to of eighteen hundred, amounting to fifteen to twenty times exceeding healthy standards.

Firecracker Prohibition and Recent Changes

Beginning in 2020, the government had implemented a comprehensive restriction on the purchase and ignition of fireworks during Diwali due to their significant contribution to the hazardous haze that engulfs the capital as colder weather approaches.

Yet earlier this year, the newly elected regional government appealed to the highest court to request a easing of the ban.

Officials advocated for allowing "green crackers" – historically doubted by environmental experts as being only roughly 30 percent reduced emissions – as a compromise between "cultural practices and ecological concerns".

Court Verdict and Enforcement

Despite concerns of medical and ecological campaigners, judges agreed to the request, mandating that eco-friendly pyrotechnics could be set off during specific periods throughout the celebrations.

Throughout the festival evening, there was widespread disregard of the regulated periods across the city, with little monitoring regarding whether the pyrotechnics being used were actually the eco-friendly variety.

Numerous recording stations throughout the capital showed air quality reaching highest levels around the night hours to extremely hazardous measurements seen during celebrations in at least three years.

International Effects

The widespread use of fireworks during the festival also initiated a controversy with neighbouring the neighboring country, with authorities in Pakistani Punjab pointing to deteriorating atmospheric conditions in the city of Lahore on hazardous particles traveling from across the border following the festivities.

Chronic Environmental Issue

The dangerously high levels of pollution in the city have remained as a serious challenge for more than 15 years, with the condition showing no improvement.

Near celebratory seasons, the levels of toxic particles in the air has been observed to shoot up to seventy percent above the peak readings ever documented in the Chinese city, which was previously considered as the planet's dirtiest metropolis.

Multiple Pollution Contributors

The situation in the capital is attributed to a combination of different contributors including automobile exhaust, construction debris, development work, rubbish burning and pollutants from crop residue ignition in nearby areas of neighboring agricultural zones.

In these regions, rural residents routinely ignite agricultural waste to prepare for next season, creating toxic haze that becomes contained over the capital as colder air descends.

Public Health and Economic Impact

Public health and economic impact on the approximately 33 million residents calling home the Delhi area is significant, according to numerous research.

The contaminated air leads to high levels of nervous system, cardiovascular and breathing diseases, and can result in malignancies.

Environmental contamination is calculated to be responsible for approximately 10k premature mortalities annually in Delhi.