15000 litres

That’s the quantity of air we breathe every day. Yet, in Brussels, if we know what’s on our plate (more or less) and in our glass (more or less), we don’t know what’s in the air (or very little). But that can change, thanks to you!

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Air pollution (particulate matter)


Number of sensors installed in Brussels:

Join the clean air hunt


Together let’s give a second wind to our streets, our schools and our parcs. How? Thanks to citizen science.

It’s very simple. Thanks to a little device (see below) you can measure the concentration of particulate matter in the air you breathe. With the data you and hundreds of Brussels inhabitants collect, we can visualise air pollution in real time (see map above), which allows us to better understand it and, as a result, to better fight it.

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How to measure air pollution?


We use PM sensors developped by Luftdaten in collaboration with the Stuttgart university. This device has several pros: it’s small, cheap and allows you visualise air pollution (PM2.5 and PM10) in real time.

Several tests have been made, to compare its results to the ones of official measuring stations. Even though these sensors are not as reliable as the official ones, the data they give are very similar and the tendencies (inscreases and decreases of air pollution) are the same.

It’s possible to see it here (select “sensor MEDI”) et here (pages 32-33).

In the Netherlands the Ministry of Healthstudying how these devices and citizen science can help understand better air pollution.

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