Mumbai's air quality is poor with a live AQI of 136, PM10 at 116 µg/m³, and PM2.5 at 69 µg/m³. Sensitive groups are advised caution. Among metro cities, Delhi records hazardous AQI at 346, while Kolkata's is unhealthy at 252.

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.