Prolonged exposure to air with AQI levels above 300, classified as 'Very Poor' or 'Severe' by the Central Pollution Control Board (CPCB), poses significant health risks. Individuals with pre-existing respiratory or cardiovascular conditions are particularly vulnerable. The high pollution levels can lead to respiratory illnesses, reduced lung function, and other health complications. The smog and reduced visibility also affect daily life, including transportation and outdoor activities, across affected regions.