Particulate Matter

Particulate Matter (PM) refers to tiny particles and droplets in the air that can vary in size, composition, and origin. These particles can include dust, smoke, soot, and liquid droplets. PM is categorized by size, with PM10 being particles with diameters of 10 micrometers or smaller, and PM2.5 being those with diameters of 2.5 micrometers or smaller. Due to their small size, they can be inhaled and may cause health problems, including respiratory and cardiovascular issues. Major sources of PM include vehicle emissions, industrial processes, and natural events like wildfires. Reducing PM levels is crucial for public health and environmental quality.