Private carrier IndiGo on Sunday night said fog is affecting visibility in the national capital which could delay flight schedules, while Delhi airport operator DIAL has put in place low visibility procedures.

The national capital is grappling with high pollution levels which have resulted in lower visibility at various parts of the city.

"#6ETravelAdvisory: Fog is currently affecting visibility in Delhi, which may result in slow moving traffic and delays in flight schedules," IndiGo said in a post on X at 11.44 pm.

In a separate post at 10.14 pm, Delhi International Airport Ltd (DIAL) said low visibility procedures are in progress at the airport and that flight operations were normal.

DIAL, which operates the Indira Gandhi International Airport that handles around 1,400 flight movements daily, also advised passengers to contact the airlines concerned for updated flight information.

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