Delhi's air quality drops to 'very poor' category

The air quality deteriorated from 333 on October 27 to 346 at 9.30 a.m. on October 28, the Central Pollution Control Board data showed

The air quality in the National Capital was recorded in the "very poor" category on October 28 due to poor dispersion of pollutants owing to weak winds, according to the India Meteorological Department (IMD).

The Capital witnessed a clear morning on October 28 with the minimum temperature settling a notch below normal at 14.6 degrees Celsius.

The relative humidity at 8.30 a.m. was 90%, the weather office said.

However, the air quality deteriorated from 333 on October 27 to 346 at 9.30 a.m. on October 28, the Central Pollution Control Board (CPCB) data showed.

Delhi's Anand Vihar monitoring station recorded the AQI in the "severe" category with an index value of 443 at 9.20 a.m. on October 28.

Among the monitoring stations that recorded "very poor" air quality were Wazirpur (380), Patparganj (363), Vivek Vihar (397), Punjabi Bagh (370) and Jahangirpuri (397).

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", and 401 and 500 "severe".