India, Nov. 12 -- Mumbai's air quality showed signs of stabilising on Wednesday after a spike in pollution during Diwali, as the 24-hour average air quality index (AQI) settled at 138 in the moderate category and 23 out of the city's 25 functional AQI monitors recorded readings in the moderate, satisfactory and good categories.

The two stations which recorded poor AQI levels were Navy Nagar and Malad West, at 207 and 206, respectively. Among the rest, 17 stations remained in the moderate category, while four recorded satisfactory air quality and two recorded good air quality.

According to the Central Pollution Control Board (CPCB), an AQI of 0-50 is considered good, 51-100 satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor ...