Particulate Matter refers to a mixture of solid particles and liquid droplets found in the air. Particles with a diameter of 10 micrometers or less are known as PM10. These particles are inhalable but typically get trapped in the nose, throat, or upper respiratory tract.
Optimal
0-50 µg/m³
Cautionary
51-150 µg/m³
Hazardous / Out of Range
>150 µg/m³