Chandigarh, Oct. 4 -- The air quality index (AQI) which had shot past 100 and turned 'moderate' for the first time this season on Thursday is now again in the satisfactory category as per data from the Central pollution Control Board (CPCB) observatories.

On Thursday, the AQI had crossed 100 at the Sector 53 Continuous Ambient Air Quality Monitoring Station (CAAQMS). At 9 pm, it was 129 while on Friday, the AQI dropped to 52 at the same station at 6pm. The AQI was 69 at CAAQMS Sector 22 and 61 at CAAQMS Sector 25 at the same time.

AQI between 51-100 falls under the satisfactory category. This air can cause minor breathing discomfort to sensitive people. It is where the AQI had remained before Dussehra, since monsoon had withdrawn from t...