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On Tuesday morning inhabitants of this heavily contaminated metropolis found themselves exposed to extremely polluted air that was classified as the "critical" level.

Record-Breaking Air Quality Measurements

Multiple areas of the city showed an AQI over 500, which translates to 10x the safe level set by the global health authority.

In some locations, concentrations of dangerous airborne particles hit highs of 1800, representing 15 to 20 times higher than safe limits.

Firecracker Prohibition and New Changes

Since 2020, the government had maintained a comprehensive restriction on the sale and use of firecrackers during Diwali due to their substantial impact to the deadly haze that blankets the capital as colder weather begins.

However recently, the current regional administration petitioned the highest court to seek a relaxation of the restrictions.

The suggestion was allowing "eco-friendly fireworks" – which have been questioned by environmentalists as being only approximately one-third lower impact – as a middle ground between "heritage and public health".

Court Decision and Reality

Despite concerns of public health and environmental campaigners, judges agreed to the proposal, mandating that eco-friendly pyrotechnics could be ignited during specific time windows throughout the festival.

During the celebrations, there was considerable violation of the designated hours across the city, with insufficient enforcement regarding whether the fireworks being used were actually the eco-friendly variety.

Numerous air quality sensors throughout the city showed air quality reaching highest levels around the night hours to the most severe levels observed during celebrations in at least recent memory.

Cross-Border Consequences

Extensive ignition of firecrackers during the celebrations also sparked a controversy with adjacent the neighboring country, with officials in Pakistan's Punjab partly blaming deteriorating air quality in the city of Lahore on pollutants coming from India following the events.

Long-Standing Pollution Problem

Alarmingly severe levels of atmospheric toxins in Delhi have remained as a serious problem for fifteen-plus years, with the problem showing no improvement.

Near Diwali, the concentration of dangerous particles in the air has been documented to shoot up to seventy percent above the worst readings ever documented in Beijing, which was once viewed as the world's most polluted urban center.

Various Pollution Factors

The situation in the capital is attributed to a mix of various sources including heavy vehicle emissions, dust, development work, waste incineration and pollutants from agricultural fires in adjacent regions of farming communities.

In these regions, rural residents routinely burn crop residue to expedite field preparation, creating toxic haze that remains stagnant over the metropolitan area as cooler air descends.

Public Health and Financial Consequences

The economic and health consequences on the approximately 33 million residents calling home the Delhi area is substantial, according to multiple studies.

These hazardous conditions results in increased incidence of nervous system, cardiovascular and breathing conditions, and can even lead to oncological diseases.

Environmental contamination is estimated to be causing 10,000 premature deaths each year in the city.