👉 Delhi-Light Particles, also known as Delhi dust or photochemical smog, are tiny airborne particles and pollutants that form in Delhi, primarily due to a combination of natural and human-made sources. These particles originate from vehicle emissions, industrial activities, construction dust, and the burning of agricultural waste. When sunlight interacts with these pollutants, they undergo chemical reactions that cause them to transform into even smaller, more hazardous components, including ultrafine particles (UFPs) and secondary organic aerosols. These light particles can remain suspended in the air for extended periods, often traveling long distances before settling on surfaces. Delhi-Light Particles pose significant health risks, exacerbating respiratory and cardiovascular issues, and contribute to poor air quality, making it one of the most challenging environmental problems in the city.