New Delhi: At least 81 Delhi-bound trains were running late, 21 rescheduled and three cancelled due to fog on Wednesday morning.
Flight operations at Indira Gandhi International (IGI) airport were also affected. Eight international flights were delayed and three diverted and five domestic flights delayed due to poor visibility.
Uttar Pradesh's Kanpur also witnessed dense fog.
Only Tuesday, the Delhi International Airport Limited (DIAL) announced its preparedness in tackling the fog season at the IGI airport, to ensure continuity of flight operations during the low visibility period during winter.
The three runways at the IGI Airport-- 28, 29 and 11 -- are certified for CAT III B operations, which would allow landing of the compliant aircraft with visibility as low as 50 metres, while aircraft can take off with visibility of 125 metre.