Written by the Fiveable Content Team โข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated August 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.