Mumbai AQI today, October 21, 2025: A day after Diwali celebrations, Mumbai woke up to a thick haze and alarmingly high pollution levels, with several parts of the city recording air quality in the ‘very poor’ category. According to data from the Air Quality Early Warning System, the highest AQI was logged at 341 at the India Meteorological Department’s (IMD) Colaba station at 5 am on Tuesday, October 21, 2025.
The sharp spike in pollution levels is due to the bursting of firecrackers during Diwali and weakened wind patterns as winter approaches. The overall Air Quality Index (AQI) for Mumbai stood at 217 early Tuesday morning, a steep jump from 187 on Monday. Today’s AQI marks the city’s worst air quality since the monsoon withdrawal on October 10.
Mumbai AQI todayVIDEO | Mumbai: Air Quality Index (AQI) rises to 188 this morning, indicating ‘poor’ air quality.
Visuals show hazy skies and reduced visibility across the city.#MumbaiAirQuality #AQIUpdate
(Full video available on PTI Videos – https://t.co/n147TvrpG7) pic.twitter.com/EAbDv1Dujk
— Press Trust of India (@PTI_News)
Apart from Colaba, other major areas that reported high AQI levels are:
Areas such as Sewri (195), Borivali East (189), Vile Parle West (164), Worli (123) and Kurla (119) remained ‘moderately polluted’.
An AQI between 0–50 is considered ‘good’, 51–100 ‘satisfactory’, 101–200 ‘moderately polluted’, 201–300 ‘poor’, 301–400 ‘very poor’ and above 400 ‘severe’. The higher the reading, the greater the health risk, particularly for children, the elderly and those with respiratory issues.
The India Meteorological Department (IMD) has forecast hazy conditions through Tuesday morning, with clearer skies expected by afternoon. The maximum and minimum temperatures are likely to hover around 36 degree Celsius and 26 degree Celsius respectively.
