Dense fog enveloped Delhi-NCR on Monday, reducing visibility to near zero and severely disrupting air and rail travel. Airlines like IndiGo and Air India warned of flight delays and cancellations, while schools in Noida were closed until January 1. The Air Quality Index reached 403, falling into the severe category.
On December 29, 2025, a thick blanket of fog covered Delhi-NCR, bringing daily life to a near standstill. The India Meteorological Department (IMD) issued an orange alert for very dense fog. Visibility dropped to 50 meters in the morning, expected to gradually improve through the afternoon. The maximum temperature is forecasted at 22 degrees Celsius, with a minimum around 7 degrees Celsius.
At Indira Gandhi International Airport, low visibility prompted the activation of Category-III landing procedures. The airport advised passengers to check flight status before heading out. An Air India Express flight from Goa to Delhi was diverted to Ahmedabad due to the fog. IndiGo stated, 'Delhi and Hindon airports remain enveloped in fog, leading to changes in flight schedules.' Air India warned of impacts on routes in North India due to dense fog.
Rail services were also hit, with over 100 trains running late. Indian Railways urged passengers to verify the latest status. On roads, visibility on the Yamuna Expressway and Noida-Greater Noida Expressway was severely reduced, slowing traffic considerably.
The Noida district administration closed all schools from December 29 to January 1 in view of the dense fog and cold. Similarly, all schools in Uttar Pradesh will remain shut until January 1.
Air quality remained alarming. According to the Central Pollution Control Board, Delhi's average AQI stood at 403. Anand Vihar recorded 459, IGI Airport area 317, and Chandni Chowk 423. This poses risks especially to children, the elderly, and those with respiratory issues.