Dense fog and toxic smog have enveloped Delhi-NCR, reducing visibility to nearly zero. Air quality index has reached 466 in several areas, falling into the severe category, prompting the reimposition of strict GRAP restrictions. Flights, trains, and road traffic are facing disruptions.
On January 18, 2026, dense fog and smog have complicated conditions in Delhi and the National Capital Region (NCR). According to the Central Pollution Control Board (CPCB), the Air Quality Index (AQI) reached 466 in Motibagh and 443 in ITO, both in the 'severe' category. On Saturday evening, AQI rose from 354 to 428, leading to the implementation of strict measures under GRAP Stage-IV. Officials attributed this to weak winds and the inability of pollutants to disperse properly.
Visibility dropped to near zero, disrupting traffic around Barapullah flyover, Nizamuddin, ITO, Motibagh, and the DND flyway. Dense fog blanketed northern India as well. Flight operations were affected, prompting Air India to advise passengers to check flight status and allow extra time. Under its FogCare plan, the airline is offering re-scheduling or cancellations without additional fees for impacted travelers. Air India stated, 'The safety of passengers and crew is our top priority.'
The Delhi Airport Authority recommended extra time for check-in and security, especially amid Republic Day preparations. The India Meteorological Department (IMD) reported a minimum temperature of 4.4 degrees Celsius on Saturday, 3.2 degrees below normal, with a maximum of 24.6 degrees and 72% humidity. Meteorologists forecast a gradual temperature rise by January 20, possible light winter rain, but another cold spell from January 23 to 26. India Today reported an AQI of 439, with trains also delayed.
