Karnal, Nov. 8 -- Of the country's 19 cities with air quality index (AQI) above 300, categorised in the "very poor" category on Saturday, 10 were from Haryana. Ballabgarh recorded the worst air in the country on the eve of the Diwali festival.

Ballabgarh, the industrial town of Faridabad district, recorded the AQI at 409 (severe), worse than the national capital Delhi which was in the "very poor" category at 369.

On Friday, the commission for air quality management's (CAQM) imposed Stage 3 restrictions under the Graded Response Action Plan (GRAP) in Delhi and the NCR due to air pollution.

According to the daily AQI bulletin issued by the Central Pollution Control Board (CPCB), the AQI in Sirsa was 383, followed by Panchgaon at 377, Bah...