Severe AQI And Heavy Fog Grip Delhi-NCR, Airlines Caution Passengers Amid Travel Disruptions

New Delhi: The weather changed in Delhi from Sunday night. Dense fog covered the city, and visibility was limited to a few meters in many areas. Its effect was also visible at Indira Gandhi International Airport. A low-visibility system had to be implemented. The airport administration said that flights are operating, but passengers should confirm the timing and status with their airline before traveling.

Passenger Advisory issued at 23:00 hours.

Please click on this link for real-time winter travel updates: https://t.co/KkKldKUlLQ#DelhiAirport #PassengerAdvisory #DELAdvisory pic.twitter.com/V9mbCHSEHE

— Delhi Airport (@DelhiAirport) December 28, 2025

What has been the impact on flight schedules?

Most flights are currently in operation, but there is a possibility of delay. Many passengers have received messages from airlines, informing them about time changes and possible delays. Takeoff clearance is taking time on some routes. Staff say conditions are weather dependent, and conditions can change within minutes.

#TravelAdvisory

Weather forecast for tomorrow morning indicates dense fog with low visibility in parts of northern India, including Delhi, which is likely to impact flight operations.

We have taken proactive steps to minimise disruptions (learn more at https://t.co/RJc1tVFxuD).…

— Air India (@airindia) December 28, 2025

Why has Delhi's air become so bad?

The air quality also deteriorated along with the fog. At around 11 pm, AQI was recorded at 404, which is considered a dangerous category. This level increases the risk for patients related to respiratory, heart, and lung issues. Doctors have advised to avoid going out in the morning and use masks.

#WeatherUpdate: Due to bad weather (poor visibility) in Delhi (DEL), all departures/arrivals and their consequential flights might get affected. Passengers are requested to keep a check on their flight status via https://t.co/2wynECZugy.

— SpiceJet (@flyspicejet) December 28, 2025

What are the airline companies saying?

Air India has said that flights may be affected due to weather. If needed, alternative arrangements will be made available to the passengers. SpiceJet has also warned that delays or changes in flights to and from Delhi are possible. Both have advised passengers to check the status on the website or app.

Dense fog blankets Delhi–NCR, especially Noida. Travel with caution! #Delhi #NCR #Fog pic.twitter.com/sR9Hj5kWIx

— Sanjay Singh | संजय सिंह (@SanjaySingh____) December 28, 2025

What is the road condition in Delhi-NCR?

Visibility remained very low at many places in Delhi, Noida, Gurugram, and Ghaziabad in the morning. Vehicles are moving very slowly on the highway. Many people have shared videos on social media in which roads are seen disappearing in a layer of smog. School-going children and office-going people had to face problems.

Noida rn! Fog hi fog. pic.twitter.com/Gv1M9G2frK

— Ameesha Singh (@lifeofameesha) December 28, 2025

What appeal has the administration made to the people?

The traffic police have appealed that people should keep their headlights on low beam, avoid speeding, and not travel unnecessarily. The administration is monitoring the situation and has said that additional steps will be taken if necessary.