Citizen Science · Winterthur · 2026

We measure
Winterthur's
air.

Winterthur is classified as an air quality remediation area. We know it — but we don't know exactly where. We're changing that together.

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✓ Thank you! We'll be in touch when we launch.

Network status

Official OSTLUFT sensor
for 116,000 residents

Neighbourhood-level
real-time air data

The Problem

One sensor for an entire city.

Winterthur is classified as an air quality remediation area. NOx levels regularly exceed legal limits. Yet there is barely any neighbourhood-specific data.

What happens in Töss, we don't know. What happens on your children's route to school, we don't know. What happens on the cycling path to work, we don't know.

Our Answer

Measuring where people live.

Compact air quality sensors — on balconies, school rooftops, bikes, vehicles. Not just on main roads.

The sensors transmit their readings automatically via radio — live, without manual reading. The data is open. For everyone. In real time.

«Build trust first. Then scale.»

Our prototype is already running — and we will next validate it alongside the official OSTLUFT monitoring station.

How it works

// 01

Pilot next to OSTLUFT

Our first sensor will be placed directly next to the official monitoring station in Winterthur. This lets us validate our readings scientifically — before we expand the network.

// 02

Network grows

Citizens, schools and organisations can become members of the association and be part of the measurement network. Every sensor = more data for everyone.

// 03

Data for all

Raw data goes to the City of Winterthur and ZHAW. For research. For action. For better air.

Get involved.

As a citizen, as a school, as an organisation — the PartTech Winterthur association is open to everyone who wants clean air in Winterthur.

Sign up. We'll be in touch.

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