
Particulate Matter (PM) Basics | US EPA
May 30, 2025 · PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, …
Particulate matter - Wikipedia
Particulate matter (PM) or particulates[a] are microscopic particles of solid or liquid matter suspended in the air. An aerosol is a mixture of particulates and air, as opposed to the …
Particulate matter | Definition, Air Pollution, Sources, Health …
Particulate matter is a type of air pollution that consists of airborne suspensions of extremely small solid or liquid particles, such as soot, dust, smokes, fumes, and mists.
Particle Pollution - American Lung Association
May 27, 2025 · Particle pollution, also called “particulate matter” or “soot,” refers to a mix of tiny solid and liquid particles that are in the air we breathe. Ever look at dirty tailpipe exhaust or …
Air Pollutants | Air Quality | CDC
Larger particles, called PM10, irritate the eyes, nose, and throat. Dust from roads, farms, dry riverbeds, construction sites, and mines are types of PM10. Smaller particles, called PM2.5, …
What's in the Air? - Center for Science Education
Air also contains tiny solid particles called aerosols, such as dust, sea salt, and ash from erupting volcanoes or forest fires. Many of these particles are so small that they are microscopic.
Air pollution particles: what are they? - Encyclopedia of the Environment
Jul 16, 2018 · Particulate matter is a major component of air pollutants. They are considered to be one of the main causes of pollution-related mortality.
What is Particle Pollution? | US EPA
Jun 6, 2025 · Particle pollution, also known as particulate matter or PM, is a general term for a mixture of solid and liquid droplets suspended in the air.
Airborne Particles: What They Are and Their Health Effects
Jul 25, 2025 · Airborne particles are tiny solid or liquid substances suspended in the air we breathe. These microscopic components are present everywhere, influencing daily air quality. …
Air Info Now: What is Particulate Matter - Pima County, Arizona
They are a kind of air pollution called particles or particulate matter. In fact, particulate matter may be the air pollutant that most commonly affects people's health.