IAQ5 min readIn preparation
PM2.5 vs PM10: different particles, different questions
Particle size, likely sources and why reporting one fraction without context can hide the exposure picture.
Different fractions, different evidence
PM10 and PM2.5 describe particulate size fractions. Their relevance depends on the environment, likely sources and the decision the monitoring must support.
Plan before measuring
Instrument choice, location, duration and contextual information all affect what can reasonably be concluded from particulate data.
Editorial status
This article is in preparation. The page currently provides a concise, non-regulatory overview and will be expanded following technical review.