Archive · 7 Nov 2025
Mumbai and Delhi Choked by Smog, AQI Remains Poor to Very Poor
Imagine the air outside is like a big blanket.
In Mumbai and Delhi, this blanket has become very dirty and hard to breathe through because of smog.
In Mumbai, the air quality is 'poor' in many places, like Bandra, because the winter winds are too slow to blow the dirty air away.
In Delhi, the air is even dirtier, called 'very poor', and the smog is thick like a haze.
This is happening as winter starts, making it harder for pollution to escape.
Officials in Delhi even used water sprinklers to try and clean the air.
Mumbai experienced dense smog with AQI readings in the 'poor' category in areas like Bandra Reclamation (214) and Bandra Kurla Complex (222).
Delhi's overall AQI reached 312 on Friday morning, categorized as 'very poor', an increase from the previous day's 'poor' rating.
Multiple monitoring stations in Delhi reported 'very poor' air quality with AQI levels exceeding 300.
Slow winter winds are cited as a reason for the lack of pollutant dispersal in Mumbai.
Truck-mounted water sprinklers were deployed in Delhi to combat the worsening air pollution amid the onset of winter.
- Who
- Residents of Mumbai and Delhi
- What
- Both cities experienced severe smog, with air quality indices ranging from 'moderate' to 'very poor'. Delhi saw a rise in its overall AQI, while Mumbai's pollution levels remained high due to slow winds.
- When
- Friday morning, November 7, 2025, with reference to data from the morning of November 6 as well. Winter conditions are beginning to set in.
- Where
- Mumbai and Delhi, with specific readings from areas like Bandra, Chembur, Borivali in Mumbai, and various locations across Delhi including Anand Vihar, Alipur, and ITO.
- Why
- Slow winter winds are hindering the dispersal of pollutants in Mumbai. Delhi is experiencing the onset of winter haze, and measures like water sprinklers were deployed.
Mumbai
Delhi
Air Quality Index (AQI) Levels
Mumbai
AQI in several Mumbai areas such as Bandra Reclamation (214) and Bandra Kurla Complex (222) was in the 'poor' category. Other areas like Borivali East (150) and Chembur (132) were also affected.
Delhi
Delhi's overall AQI was 312 ('very poor') as of Friday morning, a rise from 271 ('poor') on Thursday. Multiple monitoring stations recorded AQI above 300 in the 'very poor' category.
Pollution Dispersion Factors
Mumbai
Slow winter winds are preventing pollutants from dispersing in Mumbai.
Delhi
Delhi also experienced a thick layer of haze with the onset of winter, though truck-mounted water sprinklers were deployed to combat pollution.
- Mumbai AQI (Bandra Reclamation)
- 214 (Poor)
- Mumbai AQI (Bandra Kurla Complex)
- 222 (Poor)
- Mumbai AQI (Borivali East)
- 150 (Moderate)
- Mumbai AQI (Chembur)
- 132 (Moderate)
- Delhi Overall AQI
- 312 (Very Poor)
- Delhi Minimum Temperature (Nov 6)
- 12°C
- Publication Date
- November 7, 2025
