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On Tuesday morning citizens of the planet's dirtiest urban center found themselves exposed to dangerously toxic air that was classified as the "alarming" category.

Record-Breaking Pollution Measurements

Several parts of Delhi recorded an air quality index over 500, which translates to 10x the safe threshold set by the global health authority.

Certain monitoring stations, readings of dangerous airborne particles hit highs of 1800, equating to 15 to 20 times higher than safe limits.

Firecracker Prohibition and Current Changes

Since 2020, authorities had maintained a total prohibition on the distribution and bursting of fireworks during the Festival of Lights due to their substantial impact to the dangerous smog that engulfs the capital as the cold season begins.

However recently, the newly elected local administration petitioned the judicial authority to request a easing of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – historically questioned by environmentalists as being only approximately one-third reduced emissions – as a balance between "cultural practices and public health".

Judicial Ruling and Enforcement

Despite concerns of environmental and health advocates, the court complied with the request, mandating that environmentally conscious fireworks could be set off during designated time windows throughout the celebrations.

During the celebrations, there was extensive flouting of the designated hours across the capital, with minimal regulation regarding whether the fireworks being used were actually the supposedly greener version.

Numerous monitoring devices throughout Delhi recorded contamination peaking around midnight to some of the worst levels seen during Diwali in at least three years.

International Consequences

The proliferation of fireworks during the celebrations also sparked a controversy with bordering Pakistan, with representatives in Pakistani Punjab pointing to worsening pollution levels in the city of Lahore on hazardous particles coming from across the border following the events.

Chronic Environmental Crisis

The dangerously high concentrations of air contamination in the city have persisted as a significant problem for fifteen-plus years, with the problem continuing to worsen.

Around the festival period, the levels of hazardous airborne contaminants in the air has been observed to shoot up to 70% higher the worst records ever measured in China's capital, which was previously regarded as the world's most polluted urban center.

Various Contamination Contributors

The problem in the city is attributed to a mix of various sources including heavy vehicle emissions, airborne particles, development work, rubbish burning and pollutants from agricultural fires in neighbouring regions of farming communities.

Within these states, rural residents routinely burn crop residue to clear them quickly, creating hazardous pollution that remains stagnant over the capital as colder air sets in.

Health and Economic Consequences

Both financial and medical impact on the nearly 33 million residents residing in the Delhi area is substantial, according to various studies.

These hazardous conditions results in high levels of neurological, heart and circulatory and lung diseases, and can even lead to cancer.

Environmental contamination is projected to be accounting for approximately 10k untimely fatalities annually in Delhi.