The city got colder on Sunday as the minimum temperature dipped to 10 degrees Celsius (°C) and recorded drizzling in some parts, leading to weather officials to predict a further fall in mercury and dense fog in the coming days.

A slight increase in wind speeds on Sunday also helped improve the air quality index but it remained in the “very poor” category. According to the Central Pollution Control Board. the 24-hour average AQI stood at 314 at 4pm on Sunday against 353 recorded a day ago. The AQI is likely to remain “very poor” for the next three days, according to the Early Warning System.

Wind speed increased slightly on Sunday, touching 6-8 km/hr in parts, while it was around 4-5 km/hr on Saturday. There will be no significant increase or decrease in the wind speed though in the coming days,” said Kuldeep Srivastava, scientist at the India Meteorological Department, adding that the drizzle was on account of a western disturbance and a cyclonic circulation over Haryana. On Sunday morning, the Capital recorded shallow fog, he said.

However, IMD said that the minimum temperature is expected to dip to 9°C by Monday and 8°C by Tuesday. Moderate to dense fog is also likely over the next two days, it added.

“A fresh western disturbance impacted Delhi on Sunday, bringing a drizzle in some parts. The increase in moisture may contribute to moderate to dense fog over the next 48 hours now,” Srivastava said.