Where are the particulates coming from?

Particulates in the air can originate from various sources, including natural and anthropogenic activities. Natural sources include dust from deserts, wildfires, and volcanic eruptions, while human-made sources involve emissions from vehicles, industrial processes, construction activities, and burning fossil fuels. Additionally, household activities, such as cooking and heating, can contribute to indoor particulate pollution. The composition and concentration of particulates can vary significantly based on location and time.