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Tuesday brought inhabitants of this heavily contaminated metropolis were faced with exposed to severely hazardous air that registered in the "critical" level.

Extremely High Air Quality Measurements

Various sections of the city showed an AQI over 500, which represents 10x the recommended level established by the global health authority.

Particular areas, levels of toxic particulate matter hit highs of 1800, representing 15-20x exceeding acceptable standards.

Firecracker Restrictions and Recent Developments

Beginning in 2020, authorities had maintained a complete ban on the distribution and bursting of firecrackers during Diwali due to their substantial impact to the dangerous smog that covers the capital as colder weather begins.

Yet earlier this year, the current local leadership approached the highest court to seek a easing of the ban.

Officials advocated for allowing "eco-friendly fireworks" – which have been doubted by environmental experts as being only roughly 30 percent lower impact – as a middle ground between "heritage and public health".

Judicial Verdict and Reality

Despite concerns of public health and environmental activists, judicial authorities complied with the request, mandating that eco-friendly pyrotechnics could be ignited during designated periods throughout the celebrations.

During the celebrations, there was considerable violation of the designated hours across the metropolis, with insufficient enforcement regarding whether the pyrotechnics being used were actually the more environmentally friendly variety.

Several monitoring devices throughout the city recorded contamination peaking around midnight to some of the worst measurements seen during celebrations in at least three years.

International Effects

The widespread use of pyrotechnics during Diwali also triggered a blame game with neighbouring the neighboring country, with authorities in Pakistani Punjab partially attributing deteriorating air quality in Lahore on pollutants originating in India following the celebrations.

Persistent Environmental Issue

Alarmingly severe readings of air contamination in the city have remained as a serious problem for fifteen-plus years, with the condition gradually deteriorating.

Near celebratory seasons, the levels of dangerous particles in the environment has been documented to shoot up to seventy percent above the worst records ever recorded in Beijing, which was formerly considered as the world's most polluted urban center.

Multiple Contamination Sources

The situation in Delhi is resulting from a combination of different contributors including automobile exhaust, airborne particles, construction activities, rubbish burning and pollutants from crop residue ignition in neighbouring areas of Punjab and Haryana.

In these regions, rural residents routinely burn crop residue to expedite field preparation, creating hazardous haze that becomes contained over the metropolitan area as cooler air sets in.

Medical and Financial Impact

The economic and health impact on the nearly 33 million people calling home the Delhi area is enormous, according to various investigations.

This pollution causes increased incidence of neurological, heart and circulatory and lung diseases, and can even lead to malignancies.

Environmental contamination is calculated to be causing approximately 10k premature mortalities per year in the city.