Delhi's air quality plunges to severe levels as AQI exceeds 400

Delhi's air quality crisis deepened as Thursday saw a dramatic spike in pollution levels, with the Air Quality Index (AQI) crossing the 400 threshold. The rapid deterioration marked a significant worsening from previous days, as PM2.5 concentrations—the most harmful category of airborne particulates—more than doubled in the span of a single day.

The severe air quality classification indicates that the general population faces health risks, with vulnerable groups including children, the elderly, and those with respiratory conditions at particular risk. Prolonged exposure to such pollution levels can trigger or exacerbate respiratory and cardiovascular ailments.

The sharp spike in pollution underscores the cyclical nature of Delhi's air quality challenges, particularly during winter months when meteorological conditions trap pollutants closer to the ground. Contributing factors typically include vehicular emissions, industrial activity, and seasonal agricultural burning in neighboring states, all compounded by reduced wind speeds and temperature inversions.

Health authorities typically recommend that residents limit outdoor activities and use appropriate respiratory protection when air quality reaches severe levels. The situation remains under monitoring as authorities assess whether pollution levels will persist or gradually improve in coming days.