New Delhi: The city woke up to a chilly Saturday morning with the minimum temperature settling at 7.1 degrees Celsius and the city being enveloped in a cover of moderate fog.

Visibility dropped to 300 metres at Safadarjung and 400 metres at Palam due to fog, around 7:30 am, said a MeT department official.

The relative humidity was 100% at 8:30 am.

According to the forecast of the department, the day will turn from partly cloudy to generally cloudy by the evening and there is a possibility of "very light" rain by the night.

The city’s air quality deteriorated on Friday, and authorities predicted that rainfall might lower the pollution levels.

According to the Central Pollution Control Board (CPCB) data, the overall air quality index (AQI) in the city was 348, which falls in the ''very poor'' category.

The maximum temperature is expected to be around 22 degrees Celsius.

A railways official said 11 Delhi-bound trains were running late by 2-3 hours on average, due to fog.

The maximum temperature on Friday was 22.3 degrees Celsius, whereas the minimum was 4.8 degrees Celsius.

With PTI inputs