Air quality · PM2.5good
9.3 µg/m³
The available annual series averages 1.9× the WHO annual guideline of 5 µg/m³. The daily average exceeded 15 µg/m³ on 50 days.
The recent period is 20% lower than the preceding period.
Velsen
Noord-Holland68.790 residents49,1 km²
99
sensors, 2,0/km²
Public summary
What the measurements in Velsen show
The citizen sensor network in Velsen, Noord-Holland, contains 99 sensors: an average of 2.0 per km². Projects including Hollandse Luchten and Palmes contribute measurements to this public network.
Noise
Velsen does not yet have a reliable municipality-wide noise series. MedeMeter is designed to make local noise patterns near homes visible.
Building the report for Velsen…
We're reading the citizen sensors and making sense of the figures.
did you know?Particulate matter (PM2.5) is roughly 30× thinner than a human hair. Small enough to reach deep into your lungs.
