Particulate Matter PM10

PM10 represent particulates or particulate matter with particle sizes less than 10 microns in diameter, about 1/7th the thickness of the human hair.


Particulate matter 10

Time-weighted average

340 (variable) - 80 (variable) µg/Nm3 (ppm)

Averaging time

24 hour Annual

Time –weighted average Averaging Time Number of allowable exceedances
340 µg/m3 24-hour 24 times per annum
80 µg/m3 annually None
Number of allowable exceedances

24 times per annum3 - N/A