Delhi Woke Up To Rare Fog In March Delhi and surrounding areas experienced a rare hazy morning on Saturday, following the city’s coldest March day in six years and its cleanest air day in five months. The unusual weather phenomenon, which is uncommon for late March, was attributed to a sudden shift in weather patterns triggered by recent rainfall. The event marked a departure from typical seasonal trends, as spring usually transitions into summer by this time. The fog, described as a "pleasant surprise" for residents, was linked to the influence of a western disturbance that brought increased atmospheric moisture. This rainfall significantly raised humidity levels, which are typically low in March, creating conditions conducive to the formation of fog. Meteorological experts explained that the combination of easterly surface winds and stable atmospheric layers prevented the dispersion of moisture, allowing it to condense into ground-level fog and mist. Despite daytime temperatures hovering around 28-30 degrees Celsius, cooler morning temperatures near 15 degrees Celsius and partly cloudy skies contributed to the accumulation of particles in the air. The Indian Meteorological Department (IMD) clarified that the phenomenon was not smog but rather weather-amplified mist. The situation was similar to conditions observed during the second week of March, when haze persisted until the afternoon. The fog’s formation was also influenced by interactions between aerosols and humidity. Increased moisture enabled PM2.5 particles to absorb water, causing them to swell by up to 60% and rise in concentration under high humidity levels, which exceeded 70% in the morning.#delhi #noida #indian_meteorological_department #balochistan #thar_desert
