India, Jan. 29 -- Delhi's air quality deteriorated to 'very poor' category on Wednesday due to the influence of western disturbance (WD).

The air quality index (AQI) was recorded at 335 (very poor) at 10am and 347 (very poor) at 12pm on Wednesday, as compared to the 24-hour average AQI of 276 (poor) recorded at 4pm on Tuesday.

The Air Quality Early Warning System (AQEWS) for Delhi has forecast the AQI to stay in the very poor category for the next few days.

"The air quality is likely to be in very poor category from Wednesday to Friday. The outlook for subsequent six days is that the air quality is likely to be in very poor to poor category," the AQEWS bulletin said.

The India Meteorological department (IMD) said that wind speed in th...