Beyond the numbers: the uncomfortable complexity of PM_2.5

[AirGradientBlog]

We all know PM2.5 is a major contributor to air pollution causing severe health damage around the globe. But do you know what PM2.5 actually means? You would be surprised to learn that there is no clear numerical answer to the total mass of airborne particles smaller than a certain size, e.g. 2.5 micrometers.

---

This is a companion discussion topic for the original entry at https://www.airgradient.com/blog/the-complexity-of-pm25/

[Sterk_SABD]

Two questions we often get: “how long does PM2.5 stay inside your body”, and “can you body expell PM once inhaled, or does it stay inside your body forever”? Would you be able to shed some light on the long-term health impact of inhaling PM?

Thanks for the great work!