Air quality across Himachal Pradesh has worsened post-Diwali due to firecracker use, with the average Air Quality Index (AQI) rising to 140 (moderate) this year, up from 92 last year. Data from the pollution department shows industrial areas experiencing AQI levels from moderate to very poor, with Baddi recording a “very poor” AQI of 392, followed by Parwanoo at 217.