Delhi is currently grappling with a dual challenge of 'very poor' to 'severe' air quality and dense fog, significantly impacting daily life and transport. On Saturday, January 17, 2026, the Air Quality Index (AQI) in the national capital was recorded around 364-368 in the 'very poor' category, with several hotspots even registering 'severe' levels above 400. For instance, Anand Vihar reported an AQI of 437, Patparganj 429, and Chandni Chowk 426, placing them firmly in the 'severe' zone. In response to the deteriorating air quality, the Commission for Air Quality Management (CAQM) had already invoked Stage III of the Graded Response Action Plan (GRAP) across the entire National Capital Region (NCR) on Friday, January 16, 2026. This proactive measure aims to prevent further worsening of the air quality, especially as forecasts indicate a likelihood of the average AQI breaching the 400-mark and entering the 'severe' category in the coming days due to unfavorable meteorological conditions like slow wind speeds and stable atmosphere. GRAP Stage III mandates restrictions including a ban on non-essential construction and demolition activities, and curbs on the plying of BS-III petrol and BS-IV diesel light motor vehicles in Delhi and surrounding districts. Adding to the woes, dense fog enveloped large parts of Delhi on Saturday morning, leading to significantly reduced visibility at Indira Gandhi International (IGI) Airport, where minimum visibility dropped to 150 meters at Palam. This resulted in delays for multiple flights, affecting both arrivals and departures. Passengers have been advised to check their flight status before heading to the airport. The combined impact of pollution and fog underscores a critical public health and logistical challenge for the city.