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On Tuesday morning citizens of this heavily contaminated metropolis encountered breathing extremely polluted air that registered in the "severe" range.

Alarming Pollution Readings

Multiple areas of the capital recorded an air quality index exceeding 500, which represents 10x the safe level recommended by the WHO.

Particular areas, readings of toxic particulate matter reached peaks of 1,800, representing 15 to 20 times higher than healthy standards.

Pyrotechnics Ban and New Developments

Beginning in 2020, authorities had implemented a comprehensive restriction on the purchase and ignition of fireworks during the Festival of Lights due to their significant contribution to the deadly pollution that engulfs the city as colder weather begins.

Yet earlier this year, the newly elected city government appealed to the supreme court to seek a easing of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – historically criticized by environmental experts as being only about 30% reduced emissions – as a middle ground between "tradition and public health".

Legal Ruling and Reality

Much to the frustration of environmental and health campaigners, judicial authorities agreed to the appeal, specifying that green firecrackers could be used during specific periods throughout the celebrations.

On Monday night, there was extensive flouting of the time restrictions across the capital, with minimal monitoring regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Many monitoring devices throughout the capital showed contamination spiking around late evening to extremely hazardous readings seen during Diwali in at least recent memory.

Cross-Border Consequences

The proliferation of fireworks during Diwali also sparked a blame game with bordering Pakistan, with representatives in Pakistani Punjab province partially attributing deteriorating pollution levels in the city of Lahore on pollutants coming from neighboring India following the festivities.

Chronic Environmental Problem

Alarmingly severe concentrations of atmospheric toxins in the city have continued as a major problem for fifteen-plus years, with the situation gradually deteriorating.

Around the festival period, the levels of hazardous particles in the air has been found to spike to significantly exceeding the peak readings ever recorded in the Chinese city, which was once regarded as the world's most polluted urban center.

Various Contamination Contributors

The situation in the capital is caused by a combination of different contributors including heavy vehicle emissions, airborne particles, building projects, waste incineration and smoke from crop residue ignition in nearby regions of neighboring agricultural zones.

Within these states, rural residents routinely ignite agricultural waste to prepare for next season, creating dangerous haze that becomes contained over the capital as colder air sets in.

Medical and Economic Consequences

Public health and economic toll on the approximately 33 million people calling home the Delhi area is substantial, according to numerous investigations.

These hazardous conditions results in elevated rates of nervous system, cardiovascular and lung disorders, and can result in malignancies.

Environmental contamination is calculated to be accounting for ten thousand untimely deaths each year in Delhi.