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Thick smog blankets capital: Delhi on orange alert as cold intensifies; IndiGo issues advisory

Delhi remains engulfed in thick smog as chilly weather intensifies, prompting the India Meteorological Department to issue an orange alert. With visibility severely reduced and the Air Quality Index hovering around 400, residents continue to grapple with hazardous air conditions and biting cold across the national capital.

Air quality in major areas deteriorated sharply amid the cold spell accompanied by rising pollution levels
Air quality in major areas deteriorated sharply amid the cold spell accompanied by rising pollution levels Credit:X
| Updated on: Dec 29, 2025 | 09:07 AM
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New Delhi: Several lanes across Delhi became difficult to navigate on Monday as a thick layer of smog blanketed the city, significantly reducing visibility amid chilly weather conditions. Considering the severity of the situation, the India Meteorological Department (IMD) issued an orange alert, cautioning commuters about hazardous driving conditions due to extremely low visibility in the National Capital.

The overall Air Quality Index (AQI) in Delhi ranged between 391 and 523 on Monday, placing large parts of the city in the severe category.

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Air quality in major areas deteriorated sharply amid the cold spell accompanied by rising pollution levels. Anand Vihar recorded an AQI of 459, while Dwarka reported an AQI of 338. Unable to withstand the biting cold, several people were seen taking shelter in roadside camps across the city.

Chill, pollution and smog grip NCR

The situation worsened for residents as they battled intense cold along with escalating pollution levels. The minimum temperature on Sunday night dropped to 6.3°C, slightly below the seasonal average. On Monday, temperatures were expected to hover around 22°C (maximum) and 7°C (minimum). The IMD warned that shallow to very dense fog is likely during morning hours, particularly in isolated pockets.

Delhi’s air quality further deteriorated, slipping into the very poor category. Officials advised vulnerable groups, including children, the elderly, and those with respiratory ailments, to avoid outdoor activities and unnecessary travel.

In response to the worsening air quality, authorities enforced Stage III of the Graded Response Action Plan (GRAP). The measures include restrictions on construction and certain industrial activities, along with strict enforcement of the ‘No PUC, No Fuel’ rule to curb vehicular emissions. Enforcement teams have been deployed across Delhi-NCR to ensure compliance.

Delhi airport, IndiGo issue travel advisories

Amid the deteriorating conditions, Delhi Airport issued a passenger advisory, stating:“Flight operations are currently being conducted under CAT III conditions due to dense fog, which may result in delays and cancellations. Our ground teams are actively assisting passengers to ensure smooth travel. We sincerely regret any inconvenience caused.”

IndiGo also issued an advisory, saying: “Delhi and Hindon Airport continue to remain wrapped in chilly winter air and lingering fog this morning. Fluctuating visibility has led to changes in flight schedules, and operations may be slower than usual as conditions evolve. Our teams on the ground are prioritising safety and compliance with visibility requirements. Once the weather settles, operations will gradually stabilise, and flights will depart as planned. Thank you for your patience and understanding.”

Other airlines are also expected to face disruptions. Passengers have been advised to **check their flight status before leaving for the airport.

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