This year the AQI after Diwali is the cleanest in Delhi since 2015.

This year the AQI after Diwali is the cleanest in Delhi since 2015.

This year, the day after Diwali has seen the cleanest air in Delhi since 2015. The AQI (air quality index) on Diwali day was 312, while it was 303 on October 25, according to data from the Central Pollution Control Board (CPCB). The AQI on Diwali day this year is the cleanest that the city has seen since 2019 and the pollution levels were 30% lower on Diwali than they were the year before. An AQI between zero and 50 is considered ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor, and 401 and 500 ‘severe’.