Dense Fog and Severe Air Pollution Impact Delhi-NCR Amid Cold Wave and Flight Delays

Delhi and the National Capital Region experienced dense fog and a cold wave, with minimum temperatures around 4.4°C, below seasonal averages. Visibility dropped sharply, affecting road, rail, and air travel, leading to flight delays and advisories from airlines like IndiGo and Air India. Air quality deteriorated to 'severe' levels, prompting authorities to enforce Stage IV of the Graded Response Action Plan (GRAP). The India Meteorological Department forecast gradual temperature rises and possible light rainfall, with another cold spell expected later this month.