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Tuesday brought inhabitants of the planet's dirtiest urban center encountered breathing dangerously toxic air that was classified as the "alarming" category.

Alarming Pollution Readings

Several parts of the city registered an air quality index above 500, which equals a tenfold increase over the recommended limit recommended by the global health authority.

Certain monitoring stations, readings of PM2.5 and PM10 reached peaks of 1,800, amounting to fifteen to twenty times higher than safe levels.

Fireworks Ban and New Developments

Beginning in 2020, the government had implemented a comprehensive restriction on the distribution and bursting of firecrackers during Diwali due to their significant contribution to the dangerous haze that engulfs the metropolis as winter begins.

Yet earlier this year, the newly elected city administration appealed to the judicial authority to propose a easing of the restrictions.

They proposed allowing "eco-friendly fireworks" – historically doubted by environmental experts as being only roughly 30 percent less polluting – as a compromise between "cultural practices and public health".

Legal Verdict and Enforcement

To the disappointment of environmental and health activists, judges approved the proposal, specifying that environmentally conscious fireworks could be used during designated hours throughout the festival.

During the celebrations, there was extensive flouting of the designated hours across the metropolis, with little monitoring regarding whether the fireworks being used were actually the eco-friendly variety.

Numerous monitoring devices throughout the capital recorded contamination reaching highest levels around the night hours to some of the worst readings seen during the festival in at least three years.

Cross-Border Effects

Extensive ignition of pyrotechnics during the celebrations also initiated a controversy with adjacent Pakistan, with officials in Pakistani Punjab pointing to declining pollution levels in their urban centers on pollutants traveling from across the border following the festivities.

Long-Standing Pollution Problem

Alarmingly severe concentrations of air contamination in the capital have remained as a significant problem for more than 15 years, with the problem continuing to worsen.

During the festival period, the levels of dangerous particulate matter in the environment has been documented to increase dramatically to 70% higher the peak readings ever documented in the Chinese city, which was previously regarded as the globally most contaminated city.

Various Contamination Contributors

The problem in the capital is resulting from a convergence of multiple factors including automobile exhaust, dust, construction activities, waste incineration and pollutants from agricultural fires in adjacent states of Punjab and Haryana.

In these regions, rural residents routinely burn crop residue to prepare for next season, generating hazardous smog that remains stagnant over the metropolitan area as cooler air sets in.

Health and Financial Toll

Public health and economic impact on the nearly 33 million residents calling home the capital region is substantial, according to numerous studies.

This pollution results in high levels of nervous system, heart and circulatory and breathing conditions, and can result in malignancies.

Air quality crisis is estimated to be causing approximately 10k early deaths each year in the capital.