Delhi’s air quality slipped to 'severe' category on Sunday as dense fog blanketed the national capital, reducing visibility and compounding pollution levels. According to data from the Central Pollution Control Board (CPCB), the city’s Air Quality Index (AQI) stood at 444, placing it firmly in the severe bracket. Weather conditions remained unfavorable for the dispersion of pollutants, with 100 per cent relative humidity recorded at 8:30 am. The India Meteorological Department (IMD) issued a yellow alert, cautioning residents about dense fog at isolated places during the morning hours. The combination of low temperatures, calm winds, and high moisture levels has led to the accumulation of pollutants, worsening air quality across the city.

Source: Indian Express January 18, 2026 09:03 UTC