What are the ingredients for smog?

Smog is primarily formed from a combination of pollutants, including nitrogen oxides (NOx), volatile organic compounds (VOCs), sulfur dioxide (SO2), and particulate matter. These ingredients typically originate from sources such as vehicle emissions, industrial discharges, and burning fossil fuels. In the presence of sunlight, these pollutants undergo chemical reactions, leading to the formation of ground-level ozone and other harmful compounds that contribute to smog. Weather conditions, like temperature inversions and humidity, further exacerbate smog formation.