Karnal, Nov. 3 -- In view of the deteriorating air condition in Delhi, particularly the National Capital Region (NCR), various districts of Haryana have started witnessing poor quality air conditions, with some districts reaching poor to very poor categories.

The Commission for Air Quality Management (CAQM) on Monday invoked GRAP-2 curbs across the NCR region after the Delhi's air quality reached to 'very poor' category for the first time in the season and was recorded at 324.

According to the Central Pollution Control Board's (CPCB) evening bulletin on Monday, Kaithal district was the most polluted in the state, with an air quality index (AQI) recorded at 310 in the 'very poor' category.

AQI defines the overall air quality like a ther...