Photochemical Smog

Photochemical smog is a type of air pollution formed when sunlight reacts with pollutants like nitrogen oxides (NOx) and volatile organic compounds (VOCs) released by vehicle emissions, industrial processes, and other sources. This reaction creates harmful chemicals such as ozone at ground level, along with other pollutants like peroxyacyl nitrates and aldehydes. These pollutants can cause respiratory problems, irritate the eyes, and damage the environment. Photochemical smog is most common in sunny, urban areas with high traffic and industrial activity, especially during warm months. It differs from traditional smog and is a major urban air quality concern.