Summary:
- The article discusses the severe air quality in Delhi, India, with the Air Quality Index (AQI) reaching "severe" levels, indicating extremely high levels of air pollution.
- The high pollution levels are attributed to a combination of factors, including the ongoing winter season, cold weather conditions, and the burning of crop residues in nearby agricultural areas.
- The article emphasizes the need for urgent action to address the air pollution crisis in Delhi, as it poses significant health risks to the city's residents, especially vulnerable populations such as children and the elderly.