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On Tuesday morning residents of the world's most polluted city found themselves exposed to extremely polluted air that fell into the "alarming" category.

Extremely High Air Quality Levels

Multiple areas of the capital registered an AQI above 500, which represents 10x the healthy level set by the global health authority.

Particular areas, levels of toxic particulate matter hit highs of 1800, equating to fifteen to twenty times exceeding acceptable levels.

Pyrotechnics Restrictions and Recent Changes

Beginning in 2020, the government had enforced a comprehensive restriction on the distribution and bursting of fireworks during the Festival of Lights due to their substantial impact to the hazardous pollution that blankets the capital as colder weather sets in.

However recently, the current local leadership petitioned the highest court to seek a modification of the prohibition.

Officials advocated for allowing "green crackers" – which have been criticized by conservation groups as being only approximately one-third lower impact – as a balance between "heritage and ecological concerns".

Legal Verdict and Reality

Much to the frustration of environmental and health campaigners, judicial authorities complied with the request, mandating that eco-friendly pyrotechnics could be ignited during limited time windows throughout the celebrations.

Throughout the festival evening, there was considerable disregard of the time restrictions across the metropolis, with minimal enforcement regarding whether the pyrotechnics being used were actually the supposedly greener type.

Numerous recording stations throughout Delhi recorded pollution peaking around the night hours to the most severe levels recorded during the festival in at least three years.

International Effects

The proliferation of pyrotechnics during Diwali also initiated a blame game with bordering Pakistan, with officials in Pakistan's the Punjab region pointing to worsening atmospheric conditions in the city of Lahore on contaminants originating in India following the events.

Chronic Pollution Crisis

The dangerously high readings of air contamination in the city have continued as a significant issue for more than 15 years, with the condition showing no improvement.

Near Diwali, the levels of hazardous particles in the environment has been documented to spike to 70% higher the most severe readings ever documented in the Chinese city, which was once viewed as the planet's dirtiest city.

Multiple Contamination Sources

The situation in Delhi is caused by a combination of different contributors including heavy vehicle emissions, airborne particles, development work, rubbish burning and haze from crop residue ignition in nearby areas of neighboring agricultural zones.

In these regions, agricultural workers routinely set their fields on fire to clear them quickly, creating dangerous smog that then gets trapped over the metropolitan area as winter air sets in.

Public Health and Economic Toll

Both financial and medical consequences on the roughly thirty-three million inhabitants living in the Delhi area is substantial, according to various studies.

This pollution causes high levels of neurological, cardiovascular and breathing diseases, and can result in malignancies.

The pollution is calculated to be responsible for ten thousand untimely fatalities per year in the city.