Delhi experienced moderate fog in isolated areas on Wednesday morning as the city continued to face cold day conditions. A yellow alert for "cold day" conditions has been issued for parts of the national capital, with the minimum temperature settling at 7.1 degrees Celsius, normal for this time of year. The maximum temperature, however, remained at 15 degrees Celsius, four notches below normal.

The visibility in the city ranged from 200m to 500m, impacting train schedules. Eighteen Delhi-bound trains were delayed due to the weather. The air quality improved from "very poor" to "poor," with an AQI reading of 269 at 9 am on January 10.

The India Meteorological Department's seven-day forecast indicates partly cloudy weather until January 16, with temperatures remaining within the usual range. No prevalent cold day conditions are expected during this period. Due to the cold weather, Delhi schools up to class 5 will remain closed until January 10.

A dense fog warning has been issued for North-Indian states, affecting visibility and leading to delays in flights and trains. The cold wave has intensified in the Northern region, with maximum temperatures below normal limits and night temperatures settling below normal in some areas. The weather department has issued cold day to severe cold day alerts for Haryana, Punjab, Uttar Pradesh, and Rajasthan.