Delhi air quality stays 'severe' as dense fog and cold wave intensify

Dense fog and a cold wave worsen Delhi's already severe air quality, with AQI crossing 400 in several areas; limited visibility disrupts flights

Delhi’s air quality deteriorated sharply on Monday, with many areas recording the air quality index (AQI) in the ‘severe’ range. The city woke up to hazy skies and dense fog covering most parts of the national capital.

 

At 8 am, the city’s average AQI was 366, according to the Central Pollution Control Board (CPCB) data. Anand Vihar reported the AQI at 404, while Narela recorded the highest at 418. No station reported an AQI below 300, while data for Najafgarh was not available, at the time of writing this report.

VIDEO | Delhi: Thick smog blankets the national capital, severely reducing air quality. Visuals from the ITO area.  The air quality in the national capital was recorded in the 'very poor' category on Sunday morning with an overall Air Quality Index (AQI) reading of 377, according… pic.twitter.com/DsvVFCa7Ll

— Press Trust of India (@PTI_News) December 22, 2025

 

Other high-pollution hotspots included:

• Bawana: 408
• DTU: 400
• Jahangirpuri: 403
• Mundka: 401
• Rohini: 402
• Wazirpur: 405

Most stations recorded AQI in the ‘very poor’ category, nearing the 400 mark. 

 

According to CPCB, AQI ranges are: 0–50 ‘good’, 51–100 ‘satisfactory’, 101–200 ‘moderate’, 201–300 ‘poor’, 301–400 ‘very poor’, and 401–500 ‘severe’.

Delhi airport issues advisory

The Indira Gandhi International (IGI) Airport issued an advisory for passengers as low visibility due to fog affected flight operations. 

Passenger Advisory issued at 08:00 hours.  Please click on this link for real-time winter-ready travel updates: https://t.co/KkKldKUlLQ#DelhiAirport #PassengerAdvisory #DELAdvisory pic.twitter.com/moaVxaNv1P

— Delhi Airport (@DelhiAirport) December 22, 2025

 

Over 105 flights were cancelled and more than 450 delayed on Sunday, December 21. Of these, 55 arrivals and 52 departures were cancelled, with delayed flights averaging a 36-minute wait, according to Flightradar24.com. In the evening, Delhi airport operator DIAL reported operations were running smoothly.

Weather forecast today

The India Meteorological Department (IMD) issued a yellow alert for moderate fog at most places and dense fog at isolated areas on Monday morning. Moderate to shallow fog is expected from December 23 to 25. 

 

IMD has predicted maximum and minimum temperatures around 21 degrees Celsius and 9 degrees Celsius, respectively for today. 

 

While earlier forecasts suggested ‘cold day’ conditions in some areas, sun coming out towards the evening on Sunday, helped raise the temperature.

 

Sunday saw a minimum of 9.4 degrees Celsius, slightly above the seasonal average, and a maximum of 18.1 degrees Celsius.