India, Dec. 20 -- Delhi witnessed moderate fog in the early hours of Saturday as air quality worsened, with the air remaining in the 'very poor' category, while the minimum temperature dipped sharply to 6.1 degrees Celsius.

The air quality index (AQI) recorded at 8 am on Saturday stood at 384, marginally higher than the 24-hour average of 382 logged on Friday afternoon, according to Central Pollution Control Board (CPCB) data.

An orange alert remained in place, and the India Meteorological Department (IMD) warned of possible moderate to dense fog later in the day. For Sunday and Monday, a yellow alert has also been issued.

"Moderate fog is likely at many places in the city, with dense fog in isolated places," an IMD official said.

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