Dense fog blankets Delhi-NCR amid severe AQI, aviation ministry releases advisory

A thick layer of toxic smog blanketed parts of the national capital early Saturday, with visuals showing severely reduced visibility as air pollution levels worsened across Delhi.

The Commission for Air Quality Management (CAQM) has invoked all actions under GRAP Stage-IV across Delhi-NCR in response to the sharp deterioration in air quality.

According to data from the Central Pollution Control Board (CPCB), the Air Quality Index around Rao Tularam Marg stood at 403, placing it firmly in the “severe” category.

The India Meteorological Department issued an orange alert for Saturday. Delhi recorded an average AQI of 374 on Friday.

Amid the fog-related chaos, the Ministry of Civil Aviation on Friday night issued a passenger facilitation advisory to airlines, directing them to strictly comply with norms in the interest of safety and convenience.

In a post on X, the ministry said airlines must provide timely and accurate flight information, meals and refreshments during long delays, rebooking or refunds in case of cancellations, and ensure passengers are not denied boarding after timely check-in.

The advisory also mandates assistance during diversions, special support for persons with disabilities, baggage facilitation and effective grievance redressal. The Directorate General of Civil Aviation has been tasked with monitoring compliance.

Dense fog led to the cancellation of at least 177 flights and delays to more than 500 services at Delhi airport on Friday, officials said. Data from Flightradar24 showed nearly 500 delayed flights during the day.

Delhi International Airport Ltd said operations continued under CAT III conditions, though delays were likely. Airlines including IndiGo and Air India Express also issued advisories as winter fog persists.