Make the invisible visible
Every day, up to 15,000–20,000 cars pass through this street. But what does that really mean—and how do we make its impact visible?
We monitor fine dust, air quality, noise levels, and bird sounds.
This helps us understand what’s happening and what can change.
Measuring is knowing.
The Green Mile as a living lab for a liveable city.
Check out our real-time dashboard!
With our partner Tapp, we measure air quality and noise levels. We aim to analyse the effects of various factors, such as the implementation of a 30 km/h zone, road closures, and even the impact of fireworks on these two parameters. Below, you can see some results from these measurements.
In the future, we also plan to map out the effects of greening on heat stress and explore how initiatives like a pedestrian boulevard can contribute to social cohesion and interaction.
Check out our REAL-TIME dashboard with current measurements, check out this link.
What's written in the media about air quality?
Here you can see the map of nitrogen dioxide (NO2) exceedances. You can find air quality measurements for Stadhouderskade on the Luchtmeetnet website.
What improves air quality? Trees & plants
Elms and plane trees, the street is generously adorned with them! Essential for all life on Earth. Trees purify the air, retain water, provide cooling, and capture fine particulate matter.
Did you know that at least 77 different insects live on the elm tree alone? So, trees also provide a home for them, birds, and other species. And we haven't even mentioned the underground life yet! Beneath our feet, there is an entire network of microorganisms, fungi, and much more.
To top it all off, there are monumental trees in the Carel Willinkplantsoen (Mammoth tree dating back to 1962) and in the Leidsebosje (plane trees dating back to 1860). More than 150 years old!
Be sure to check out "Bomen in kaart" (Trees on the Map).
