The severe air quality poses significant health risks, particularly to children, the elderly, and individuals with respiratory or cardiovascular conditions. PM2.5 particles, small enough to penetrate deep into the lungs and bloodstream, can cause long-term health issues, including cardiovascular and respiratory diseases. The convergence of Diwali firecrackers, stubble burning in Punjab and Haryana, and meteorological conditions like temperature inversions will likely trap pollutants, creating hazardous air quality. Residents in Delhi-NCR, especially those in areas like IIT Delhi, Punjabi Bagh, and Narela, are expected to experience the worst air quality, with AQI levels already in the 'Severe' category in these locations.