The air quality in several parts of Punjab and Haryana was on Wednesday recorded in the ‘poor’ category, while it continued to be the worst in Chandigarh, the joint capital of both states that is located in the foothills of the Shivalik hills.
According to Central Pollution Control Board's Sameer App, Chandigarh with an AQI of 375 falls in the “very poor” category.
The air quality of Chandigarh that boasts of the third-highest tree cover in India was worse than Punjab’s prominent industrial city Ludhiana at 212.
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', 401 and 450 'severe' and above 450 'severe plus'.