In Brief
AQI beyond 100; severe pollution in some areas
Pollution increased as the monsoon receded
Possibility of AQI exceeding 350 - experts warn
Even though the India Meteorological Department (IMD) has not yet officially declared the end of the monsoon, the air quality in the city is rapidly deteriorating. Mumbai's overall Air Quality Index (AQI) reached 105 on Thursday (9th) evening. As a result, the air, which was in the 'good' category during the monsoon, has now moved to the 'moderate' category. According to experts, pollution levels may increase further in the coming winter, reaching the 'very poor' level.
AQI above 100; Severe pollution in some areas
According to the Central Pollution Control Board (CPCB) data, Mumbai's AQI was 49 last Saturday. It rose to 61 on Sunday, 71 on Wednesday, and 105 on Thursday. Higher levels of pollution were found in some parts of the city, with the highest AQI recorded at 158 in Sewri, 148 in Bandra-Kurla Complex, 147 in Deonar, and 113 in Borivali.
AQI levels between 0-50 are considered good, 51-100 satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor, and above 400 severe. Currently, the air in Mumbai is in the moderate range, with some areas moving towards 'poor'.
Pollution increased as monsoon receded
During the monsoon, frequent rains washed away dust particles, keeping pollution levels under control. However, with reduced rainfall, rising temperatures, and stable weather, smoke and dust have started accumulating in the atmosphere.
According to environmental experts, changes in wind direction and dust generated from ongoing construction projects, as well as smoke from upcoming Diwali fireworks, are likely to further deteriorate air quality.
Possibility of AQI exceeding 350 - Experts' Warning
Dr. Tuhin Banerjee, a member and scientist of the Bombay Environment Action Group (BEAG), warned that "this winter, air pollution in Mumbai could be the highest compared to the past few years. Changes in the weather will disrupt wind patterns, and already weak winds may become even weaker. If the absence of winds persists, the AQI level is likely to exceed 350."
Experts' Warning to the Administration
Since the IMD has not yet officially declared the end of the monsoon, experts have suggested that the city administration should already be prepared for prolonged poor air quality.