Particulate Matter Standards

Particulate Matter (PM) standards refer to regulations set by environmental agencies to control the levels of tiny particles in the air, which can harm human health and the environment. These particles, often from sources like vehicle emissions, industrial processes, and wildfires, can penetrate deep into the lungs and enter the bloodstream. Standards are measured in terms of the size of the particles—PM2.5 (particles with a diameter of 2.5 micrometers or smaller) is particularly concerning due to its ability to cause respiratory issues and other health problems. By adhering to these standards, communities aim to improve air quality and protect public health.