New Delhi’s air quality plummeted to hazardous levels following Diwali celebrations, becoming the world’s most polluted major city with an Air Quality Index (AQI) soaring to 442. Despite the Supreme Court’s late easing of restrictions allowing only “green crackers” for limited hours, widespread use of traditional fireworks well beyond the permitted times significantly deteriorated air quality.
The fine particulate matter PM2.5 soared to concentrations more than 59 times the World Health Organization’s recommended annual limit, posing serious health risks such as respiratory and cardiac diseases. The city, home to over 30 million people, woke up amidst thick smog and reduced visibility, forcing authorities to activate emergency pollution control measures including construction bans and enhanced public transport.
Despite efforts to curb pollution with cleaner fireworks, celebrations extended late into the night, pushing PM2.5 spikes to nearly 30 times above national safe limits. Experts warn this hazardous air quality is akin to smoking 10 cigarettes a day, highlighting the urgent need for stronger enforcement and public awareness during winter months when pollution typically peaks.
