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PM10 and PM2.5: Particulate Matter

WHO air quality guidelines (in μg/m³):

PM2.5 PM10
24h average 25 50
annual average 10 20

Air quality standards in Europe (in μg/m³):

PM10 limit value alert threshold
hourly average
daily average 50 1) 200 2)
annual average 40


Note than most sensors listed below are actually measuring particle number concentrations. Assuming a mean particle density one can derive a particle mass concentration. This relation, however, can differ from place to place and over time.

Sensor boxes containing PM sensors

1) max. 35 days/year
2) Not an offcial EU alert threshold, but used by e.g. the Dutch government as a threshold value to inform the population.
pm10.1521563595.txt.gz · Last modified: 20-03-2018 16:33 by admin