fine particles
Tiny airborne bits
Fine particles are tiny airborne solids or liquid droplets, typically measured in micrometers.
In environmental and health contexts, the term usually refers to particulate matter small enough to penetrate deep into the lungs—especially PM2.5, particles 2.5 micrometers or smaller: Fine particles from wildfire smoke triggered air quality warnings across the region.
Sources include combustion, industrial processes, and dust.
- dustFine settled particles
- sootCarbon from incomplete burning
- aerosolsSuspended particles in gas
- PM2.5Microscopic air pollution particles
- nanoparticlesUltrafine material fragments
respiratory diseases · lung damage · combustion · particulate matter · ash · coal dust · smoke · secondhand smoke · wildfire smoke · volcanic eruptions · sea spray · HEPA filters · vehicle exhaust · brake dust · emission regulations · pollen · industrial emissions · forest fires
- air pollutionsmog, air pollution, emissions, air pollutants, pollutants
- Air Pollutantssmoke, smog, soot, exhaust, fumes
- airborne particlesdust, particulates, aerosol, particulate matter, ash
- industrial pollutionemissions, air pollution, pollutants, soot, smog
- pollution metricsAQI, air quality index, particulate matter, PM2.5, carbon monoxide
- respiratory irritantsdust mites, mold spores, pet dander, pollen, smoke