Delhi continued to battle a worsening pollution crisis, with its air quality plunging into the 'severe' category for a fourth consecutive day. A dense smog has blanketed the city, with the Air Quality Index (AQI) recorded at 406 this morning, according to the Central Pollution Control Board (CPCB). The smog and pollution are causing severe health concerns, including respiratory distress, eye irritation, and heightened risks of cardiovascular complications.