Scores of passengers were left in the lurch due to poor visibility at the Delhi airport which affected flight operations.
The first fog of the season was reported in the Delhi-NCR region and most parts of North India including Punjab, Haryana, Uttar Pradesh and Rajasthan on Wednesday morning.
According to the weather office, the maximum temperature is likely to be at around 26 degrees Celsius and the humidity at 8.30 A M was at 98 per cent.
The maximum temperature reported on Wednesday was 25.9 degrees Celsius while the minimum temperature was recorded at 11 degrees Celsius, one notch above the season's average.
Oneindia News (With inputs from agency)