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Tuesday brought citizens of the world's most polluted city were faced with breathing dangerously toxic air that fell into the "critical" range.

Record-Breaking Air Quality Readings

Multiple areas of Delhi recorded an air quality index over 500, which equals ten times the safe threshold recommended by the WHO.

Certain monitoring stations, readings of dangerous airborne particles reached peaks of 1,800, representing fifteen to twenty times above healthy levels.

Pyrotechnics Ban and Recent Developments

Beginning in 2020, the government had implemented a complete ban on the sale and use of pyrotechnics during celebrations due to their major role to the hazardous haze that engulfs the capital as colder weather approaches.

Nevertheless earlier this year, the newly elected regional government petitioned the judicial authority to propose a relaxation of the prohibition.

The suggestion was allowing "environmentally conscious pyrotechnics" – previously questioned by conservation groups as being only approximately one-third lower impact – as a middle ground between "heritage and environment".

Legal Decision and Enforcement

To the disappointment of environmental and health campaigners, judges approved the appeal, stipulating that eco-friendly pyrotechnics could be ignited during limited time windows throughout the Diwali.

During the celebrations, there was extensive flouting of the time restrictions across the city, with little regulation regarding whether the firecrackers being used were actually the eco-friendly version.

Many recording stations throughout Delhi recorded contamination spiking around late evening to some of the worst readings seen during celebrations in at least recent memory.

Regional Effects

Extensive ignition of firecrackers during Diwali also sparked a controversy with bordering the neighboring country, with representatives in Pakistani Punjab partially attributing deteriorating pollution levels in their urban centers on hazardous particles traveling from India following the festivities.

Persistent Pollution Crisis

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

Around the festival period, the amount of toxic particles in the air has been observed to spike to significantly exceeding the most severe records ever documented in Beijing, which was once regarded as the globally most contaminated city.

Multiple Contamination Sources

The situation in Delhi is caused by a mix of multiple factors including automobile exhaust, airborne particles, development work, rubbish burning and smoke from farm burning in neighbouring states of Punjab and Haryana.

Within these states, farmers routinely burn crop residue to clear them quickly, producing dangerous smog that then gets trapped over the metropolitan area as colder air sets in.

Health and Economic Consequences

Public health and economic toll on the nearly 33 million people calling home the capital region is significant, according to numerous research.

The contaminated air results in elevated rates of nervous system, cardiovascular and breathing diseases, and can result in cancer.

The pollution is calculated to be accounting for 10,000 premature deaths each year in the capital.