The AQI in Delhi has reached 394, placing it in the very poor category. Contributing factors include stagnant winds and low temperatures, leading to a hazardous air quality level that has prompted stricter pollution control measures.

The AQI in Delhi dropped to ‘very poor’ category by Monday evening due to low winds and continued to be at the same level on Tuesday morning.

Northern Indian cities face a sharp rise in air pollution, particularly during winter. Delhi ranks as the most polluted city with an AQI of 404, indicating hazardous levels. Other cities like Noida and Ghaziabad are among the top ten polluted ones.