When we think of Copenhagen, images of clean streets, cyclists, and sustainable urban living often come to mind. But even in one of the world’s greenest cities, air pollution remains an invisible threat. Fine particles from cars, construction, and heating systems silently affect the health of residents, especially in rapidly developing neighborhoods like Ørestad.
A recent collaboration between Miljøpunkt Amager and a team of students from Worcester Polytechnic Institute (WPI) set out to answer a crucial question:
👉 How can hyperlocal air quality data help communities see — and act on — the air they breathe?
📍 Why Ørestad?
Ørestad, a growing urban hub on Amager Island, is home to modern architecture, metro connections, and thousands of commuters passing daily along the E20 motorway. With this growth comes traffic—and with traffic, air pollution.
Miljøpunkt Amager, a non-profit dedicated to local sustainability, has long worked to raise awareness about urban environmental health. The student team joined forces with MPA to explore new ways of collecting and communicating air quality data at a neighborhood scale.
🔬 From Bridges to Backseats: Mapping the Air
Using Atmotube and Testo DiSCmini sensors, the team collected air quality data in key areas:
• On a pedestrian bridge above the E20 motorway
• In a nearby park frequented by residents
• Inside a car cabin, simulating real commuting routes
Their findings were revealing—even though overall pollution stayed below EU thresholds, local variations showed spikes during peak traffic and under certain ventilation settings inside vehicles. Simply switching a car’s air circulation mode could dramatically change what passengers breathe.
🗣️ What Residents Said
To complement the sensor data, the team surveyed and interviewed residents about their commuting habits and awareness of air quality.
The results were clear:
• 75% of respondents didn’t know how to find local air quality data.
• Yet most said they would change their route or commute method to avoid polluted areas.
• Many asked for an easier way to access hyperlocal information — ideally through an app.
As one local put it:
“Everyone in Copenhagen checks the weather. Why not the air?”
💡 From Data to Action: Three Key Recommendations
The project didn’t stop at data collection. It offered a roadmap for how Ørestad — and cities like it — could make air quality visible and actionable:
1. Launch a Citizen Science Program
Deploy fixed air quality sensors at metro stations along the E20 and equip residents with portable devices. This would turn citizens into co-researchers, creating a rich, community-owned dataset.
2. Develop the “Aw-Air” App
A mobile app that visualizes real-time, hyperlocal air quality. It could integrate with weather apps, send alerts when pollution spikes, and help residents make informed daily choices.
3. Study In-Cabin Air Quality
Build on initial findings to better understand the pollution commuters face inside vehicles — and encourage cleaner travel behaviors across the city.
🌱 A Breathable Future
“Making the Invisible Visible” shows how data, technology, and citizen engagement can come together to foster healthier cities. It reminds us that air quality isn’t just a scientific issue — it’s a community one.
By empowering residents to collect and understand their own environmental data, cities can move closer to the EU’s “Zero Pollution” goals and ensure that every breath we take is a little cleaner.
