Travel Advisory by IGI: Low Visibility, Dense Fog, AQI 454 (Severe)

• Written by Bhawika Khushlani

  Reviewed by Rashmi Rai

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On Monday, 15 December 2025, the AQI level in Delhi NCR stood at 454 according to the Central Pollution Control Board (CPCB). Due to low visibility and dense fog, Indira Gandhi International Airport (IGI) authorities issued a travel advisory for passengers. More than 60 flights were cancelled, and 150 flights were delayed as airport operations struggled to cope with near-zero visibility.

Flight Disruptions Reported

The fog has significantly reduced visibility on airport runways, forcing airlines such as Air India and Indigo to alert passengers to possible flight delays, diversions, and cancellations. Travellers were advised to check their flight status regularly and arrive at the airport earlier than usual to avoid last-minute delays.

Airlines Travel Advisory

Airlines' authorities posted on Social Media, “Due to dense fog, flight operations may experience disruptions. We are working closely with all stakeholders to minimise inconvenience to passengers. For the latest flight updates, passengers are advised to contact their respective airlines. We sincerely regret any inconvenience caused.”

Continue Rise in AQI- Weather Conditions Across Delhi-NCR

Delhi-NCR has been engulfed in thick fog and smog since early morning, causing severely reduced visibility across the region. The weather conditions have disrupted both air and road travel, raising safety concerns for commuters and travelers alike. Take a look at highlights:

• Dense fog and smog blanketed Delhi-NCR early Monday morning, reducing visibility on roads and at airports.
• Air quality levels remained poor, adding health concerns for sensitive groups like children, elderly, and those with respiratory issues.
• The Meteorological department reported cold and humid conditions, which contributed to the thick fog formation.
• Experts warned that fog is likely to persist for several hours, potentially causing continued travel disruptions.
• Commuters were advised to drive cautiously, use fog lights, and avoid unnecessary travel during peak fog hours.
• Authorities stressed monitoring weather updates and official alerts to stay safe and minimize inconvenience.

Passenger Guidance- Tips for Travellers

• Stay updated on weather conditions through official sources and airport social media channels.
• Carry necessary safety items, such as warm clothing and masks, especially for sensitive groups affected by smog or fog.
• Check flight or train status online or with your airline/railway operator before leaving for the airport or station.