New Delhi: After a brief respite from the toxic air, the air quality of Delhi again plunged into "poor" category on Sunday (December 1) morning making difficult for locals to move outdoors.

According to the Centre-run Central Pollution Control Board, at 9:00 AM, the Air Quality Index (AQI) docked at 281, which falls in the "poor" category in DTU, Delhi while in Mathura Road also the AQI was recorded at 213.

However, at the city's major junctions such as Ashok Vihar, Jawaharlal Nehru Stadium and Mundka, the AQI was 291, 277 and 289 respectively.

The national capital will witness strong surface winds during the daytime today, and the temperature would be oscillating between 9 degrees Celsius to 24 degrees Celsius, predicted India Meteorological Department (IMD).

The Centre-run SAFAR has advised "sensitive groups" to consider reducing prolonged or heavy exertion throughout the day.

"Take it easy if symptoms such as coughing or shortness of breath occur," the organisation stated in its advisory.

On November 29, people residing in the national capital heaved a sigh of relief as air pollution levels improved.

According to System of Air Quality and Weather Forecasting And Research (SAFAR), the overall Air Quality Index (AQI) of Delhi docked at 97, which falls in the "satisfactory" category, at 9 in the morning with PM 10 at 56 and PM2.5 at 62.