India, Dec. 25 -- As Delhi's air quality improved to 'poor' at 271 on Wednesday on the back of stronger winds, though the conditions are forecast to worsen again, the Commission for Air Quality Management (CAQM) revoked the strictest restrictions under Graded Response Action Plan-1V. These curbs were imposed on December 13. However, restrictions under GRAP-3,2 and 1 will remain in force, the CAQM said.

Delhi's 24-hour average air quality index (AQI) stood at 271, in the 'poor' category, on Wednesday, a sharp improvement from the 'severe' AQI of 412 recorded at 4 pm on Tuesday, according to the Central Pollution Control Board (CPCB) data.

The last time the city's air quality was recorded in the poor category was on December 10, after whi...