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Tuesday brought inhabitants of the planet's dirtiest urban center found themselves exposed to dangerously toxic air that registered in the "critical" range.

Extremely High Air Quality Levels

Several parts of Delhi showed an pollution measurement above 500, which represents a tenfold increase over the healthy limit established by the global health authority.

Particular areas, levels of toxic particulate matter hit highs of 1800, amounting to 15 to 20 times higher than acceptable levels.

Pyrotechnics Restrictions and Current Changes

Since 2020, officials had implemented a complete ban on the distribution and bursting of pyrotechnics during celebrations due to their major role to the dangerous pollution that blankets the city as colder weather approaches.

Nevertheless earlier this year, the current regional government approached the highest court to propose a relaxation of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – historically doubted by conservation groups as being only roughly 30 percent less polluting – as a compromise between "cultural practices and public health".

Court Verdict and Enforcement

To the disappointment of environmental and health advocates, judges complied with the proposal, mandating that green firecrackers could be used during specific hours throughout the celebrations.

On Monday night, there was widespread disregard of the designated hours across the capital, with minimal regulation regarding whether the firecrackers being used were actually the eco-friendly version.

Several monitoring devices throughout Delhi showed pollution reaching highest levels around the night hours to some of the worst readings observed during the festival in at least the past three years.

Regional Effects

The proliferation of fireworks during the festival also triggered a controversy with adjacent the neighboring country, with officials in Pakistani Punjab partially attributing declining air quality in Lahore on pollutants coming from India following the events.

Persistent Environmental Problem

The dangerously high levels of atmospheric toxins in the city have remained as a major problem for fifteen-plus years, with the problem gradually deteriorating.

Around celebratory seasons, the amount of dangerous particles in the atmosphere has been observed to increase dramatically to seventy percent above the most severe levels ever measured in China's capital, which was once viewed as the planet's dirtiest city.

Multiple Pollution Sources

This crisis in Delhi is resulting from a convergence of various sources including heavy vehicle emissions, dust, development work, waste incineration and pollutants from crop residue ignition in nearby states of Punjab and Haryana.

In these regions, farmers regularly ignite agricultural waste to clear them quickly, generating dangerous pollution that becomes contained over the capital as cooler air descends.

Medical and Financial Toll

The economic and health impact on the nearly 33 million people living in the Delhi area is significant, according to multiple research.

This pollution leads to increased incidence of neurological, heart and circulatory and respiratory diseases, and can potentially cause malignancies.

Air quality crisis is calculated to be causing approximately 10k untimely deaths per year in the capital.