New Delhi, Oct. 23 -- Delhi's air quality index (AQI) remained in the 'very poor' category for the third consecutive day on Wednesday, deteriorating marginally as wind speeds dropped again. The 24-hour average AQI stood at 353 (very poor) at 4 pm, as per Central Pollution Control Board (CPCB) daily national bulletin. This was the highest AQI recorded so far this season - up from 351 recorded on Tuesday and 345 on Monday. A thick blanket of smog descended over the city during the day, with winds not breaching 7 km/hr, the India Meteorological Department (IMD) said, adding that suitable dispersion is unlikely in the coming days. "The wind direction changed from easterly to westerly, but no significant change was recorded in the wind speed," s...