New Delhi experienced significant air quality deterioration following Diwali celebrations on Sunday, as residents lit firecrackers throughout the evening despite regulatory limitations. The resulting smoke and particulate emissions contributed to hazardous atmospheric conditions across the capital.
Air quality measurements recorded on Monday morning showed the Air Quality Index exceeding 350 in multiple locations throughout the city, classified as severe according to World Health Organization standards. The metric indicated substantial health risks to the 30 million residents of the metropolitan area.
India’s Supreme Court had enacted restrictions ahead of the festival, permitting only approved green firecrackers within designated three-hour windows on Saturday and Sunday. While these regulated firecrackers produce fewer emissions than conventional fireworks, they do not eliminate pollution entirely. Despite these limitations, residents continued traditional celebrations with airborne releases of harmful particulates.
New Delhi’s pollution challenges are compounded by seasonal meteorological factors. Winter conditions, characterized by cooler temperatures and reduced wind circulation, trap pollutants in the atmosphere and prevent dispersal. Data from air monitors indicated toxic pollution levels had surged to more than 30 times the WHO’s recommended daily threshold in the days immediately preceding Diwali.
According to India’s Ministry of Environment, Forest and Climate Change, vehicle emissions account for approximately 23 percent of winter pollution in New Delhi, while biomass burning from agricultural practices contributes roughly 20 percent. The accumulated pollutants typically form a persistent haze that can remain over the capital and adjacent regions for multiple days. New Delhi consistently ranks among the world’s most polluted capital cities.
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