The deteriorating air quality poses significant health risks, particularly due to high levels of PM2.5 particles, which can penetrate deep into the lungs and even enter the bloodstream. Residents, especially those with pre-existing respiratory or cardiovascular conditions, are at increased risk. The pollution is attributed to vehicle emissions, stubble burning, and other sources such as construction activities, industrial emissions, and road dust. Neighbouring districts in the National Capital Region (NCR) also contribute to Delhi's pollution levels, with Jhajjar, Gurugram, and Sonipat among the top contributors.