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Tuesday brought citizens of the planet's dirtiest urban center encountered exposed to dangerously toxic air that was classified as the "critical" level.

Record-Breaking Pollution Levels

Multiple areas of the capital showed an air quality index exceeding 500, which translates to ten times the healthy level established by the WHO.

Particular areas, levels of dangerous airborne particles hit highs of 1,800, amounting to 15-20x above healthy levels.

Firecracker Restrictions and Recent Changes

Beginning in 2020, the government had maintained a total prohibition on the distribution and bursting of pyrotechnics during celebrations due to their significant contribution to the deadly smog that engulfs the city as the cold season begins.

However earlier this year, the recently formed city administration petitioned the highest court to seek a easing of the prohibition.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically doubted by environmentalists as being only approximately one-third lower impact – as a balance between "tradition and public health".

Judicial Verdict and Reality

Despite concerns of public health and environmental campaigners, judicial authorities approved the request, mandating that environmentally conscious fireworks could be used during limited periods throughout the festival.

Throughout the festival evening, there was extensive flouting of the regulated periods across the metropolis, with insufficient monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly variety.

Many monitoring devices throughout Delhi recorded air quality spiking around the night hours to extremely hazardous readings recorded during the festival in at least three years.

Cross-Border Consequences

Extensive ignition of fireworks during the festival also triggered a blame game with neighbouring Pakistan, with authorities in Pakistani Punjab province partly blaming declining pollution levels in the city of Lahore on contaminants originating in across the border following the events.

Persistent Pollution Crisis

Alarmingly severe readings of air contamination in the capital have continued as a serious challenge for over a decade and a half, with the condition gradually deteriorating.

During Diwali, the concentration of toxic particulate matter in the environment has been observed to shoot up to significantly exceeding the peak readings ever documented in the Chinese city, which was formerly viewed as the world's most polluted urban center.

Multiple Pollution Contributors

The problem in Delhi is attributed to a mix of multiple factors including heavy vehicle emissions, airborne particles, development work, rubbish burning and pollutants from agricultural fires in neighbouring states of Punjab and Haryana.

Throughout these areas, agricultural workers routinely set their fields on fire to expedite field preparation, producing dangerous pollution that then gets trapped over the city as winter air sets in.

Medical and Economic Impact

Both financial and medical consequences on the roughly thirty-three million inhabitants residing in the metropolitan zone is significant, according to various investigations.

This pollution results in elevated rates of nervous system, heart and circulatory and respiratory disorders, and can even lead to oncological diseases.

Air quality crisis is projected to be causing 10,000 untimely fatalities annually in the capital.