The deteriorating air quality in northern India during Diwali poses significant health risks, particularly for vulnerable groups such as children, the elderly, and individuals with pre-existing respiratory or heart conditions. Prolonged exposure to high pollution levels can lead to coughing, asthma attacks, pneumonia, and even heart attacks or strokes. Fireworks emissions can worsen air quality across entire neighbourhoods, affecting even those not participating in the celebrations. Delhi, which already experiences severe air pollution, is expected to be particularly impacted, with pollution levels potentially reaching hazardous levels.