Chandigarh, Oct. 14 -- The air quality index (AQI) shot past 100 on Monday, taking the city's air quality from satisfactory to moderate, as per the Central Pollution Control Board (CPCB) data. This is the second time this season that the AQI has gone past 100. The previous such spike was seen on October 2, the night of Dussehra.

As per the daily AQI bulletin released by CPCB, at 4 pm on Monday, the city's average AQI, based on readings from its three Continuous Ambient Air Quality Monitoring Stations (CAAQMS), stood at 107. On Sunday and Saturday, the readings were 86 and 83, respectively. By 8 pm, the AQI at Sector 53 CAAQMS reached 128, while Sector 25, on the outskirts, remained satisfactory at 82.

AQI between 51-100 is considered sa...