Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
PM10 refers to particulate matter with a diameter less than 10 micrometers. These particles can come from natural sources like dust or human activities such as burning fossil fuels, and can have negative impacts on respiratory health when inhaled.
Related terms
Air quality index (AQI): A measurement used to report daily air quality and provide information about potential health risks.
Particulate matter: Tiny solid or liquid particles suspended in the air, which can vary in size and composition.
Respiratory system: The organs and tissues involved in breathing, including the lungs, bronchi, and trachea.