Chennai’s air quality recorded in ‘hazardous’ category on Diwali

Chennai’s air quality index increased on Thursday evening as low temperature and wind speed allowed the accumulation of pollutants.

Chennai’s air quality dropped to ‘hazardous’ levels on Thursday (November 4) with thick smog engulfing the city, taking the pollution to 446 on the Air Quality Index (AQI) in the evening.

According to the data from the Central Pollution Control Board (CPCB), the city recorded an average AQI of around 154 during the day and remained in the ‘moderate’ level. The air quality dropped to ‘hazardous’ category in the evening on account of bursting of crackers, as well as low temperature and wind speed.