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Tuesday brought residents of this heavily contaminated metropolis were faced with inhaling dangerously toxic air that was classified as the "alarming" category.

Alarming Pollution Measurements

Multiple areas of Delhi registered an AQI exceeding 500, which represents ten times the healthy level recommended by the WHO.

In some locations, levels of PM2.5 and PM10 soared to of 1800, equating to 15 to 20 times exceeding safe standards.

Pyrotechnics Prohibition and New Developments

Since 2020, authorities had implemented a complete ban on the distribution and bursting of firecrackers during Diwali due to their major role to the deadly haze that covers the metropolis as the cold season begins.

Nevertheless recently, the current city government appealed to the highest court to propose a relaxation of the restrictions.

Officials advocated for allowing "environmentally conscious pyrotechnics" – historically criticized by conservation groups as being only approximately one-third less polluting – as a compromise between "heritage and ecological concerns".

Court Ruling and Reality

Despite concerns of public health and environmental activists, judges agreed to the appeal, specifying that environmentally conscious fireworks could be used during designated time windows throughout the celebrations.

During the celebrations, there was extensive flouting of the time restrictions across the capital, with minimal enforcement regarding whether the pyrotechnics being used were actually the supposedly greener version.

Numerous air quality sensors throughout Delhi registered air quality reaching highest levels around late evening to extremely hazardous levels recorded during celebrations in at least recent memory.

International Effects

The widespread use of firecrackers during the festival also triggered a controversy with neighbouring Pakistan, with authorities in Pakistani Punjab province partially attributing worsening atmospheric conditions in the city of Lahore on hazardous particles originating in India following the celebrations.

Chronic Environmental Crisis

The dangerously high concentrations of air contamination in the city have persisted as a serious issue for over a decade and a half, with the problem continuing to worsen.

Near celebratory seasons, the concentration of toxic particles in the environment has been documented to shoot up to seventy percent above the worst levels ever recorded in the Chinese city, which was formerly viewed as the planet's dirtiest urban center.

Diverse Contamination Factors

This crisis in the capital is resulting from a combination of different contributors including heavy vehicle emissions, construction debris, construction activities, rubbish burning and smoke from farm burning in adjacent areas of farming communities.

In these regions, farmers regularly set their fields on fire to prepare for next season, producing toxic haze that remains stagnant over the city as cooler air descends.

Public Health and Economic Toll

Public health and economic consequences on the nearly 33 million inhabitants living in the Delhi area is enormous, according to numerous research.

The contaminated air leads to high levels of nervous system, heart and circulatory and respiratory disorders, and can potentially cause oncological diseases.

Environmental contamination is calculated to be causing ten thousand premature deaths per year in the capital.