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Urban Releaf

 We innovate together to empower citizens and create liveable,  greener and resilient  urban cities for all

Air Quality Across Riga: Insights from Urban ReLeaf Monitoring

7min • September 2026

Thanks to the involvement of residents, educational institutions and organisations, 20 air quality sensors were installed across several central neighbourhoods of Riga. The sensors have been collecting air quality data for more than…

Riga’s Atlantis mural unveiled in the centre of Riga 

4min • August 2026

On August 10th, a large-scale street art mural titled ‘Riga’s Atlantis’ was unveiled in the centre of Riga, inviting viewers to see the city canal as a living ecosystem,…

Whose Future? New Urban ReLeaf Research Maps the Role of Citizens in Shaping Green-Blue Urban Futures

7min • August 2026

A new open-access study presents the first systematic review of how citizens are engaged in green-blue infrastructure scenario planning across European cities. Despite growing interest…

Call for Creative Proposals: Transform Climate Data into Public Art in Mannheim 

4min • August 2026

Urban ReLeaf invites artists, designers, creative practitioners, and collectives to submit proposals for an exciting new opportunity in Mannheim, Germany.  We’re offering a €3,500 commission (gross) to co-create an original…

Urban ReLeaf Dundee Launches Air Quality Sensor Campaign in Local Schools 

3min • July 2026

Primary school pupils across Dundee are becoming Air Quality Explorers through a new educational campaign delivered by Dundee City Council in collaboration with partners as…

Shaping Greener Neighbourhoods: Play and Participation in Athens 

3min • July 2026

Last month, the Urban ReLeaf Athens team brought together families for an interactive workshop that combined digital citizen science with hands-on creative learning, encouraging children…

Building resilient cities through Citizen Science: Urban ReLeaf at EURESFO 2026

3min • July 2026

How can cities move from isolated citizen science initiatives to lasting, systemic change? This question shaped Urban ReLeaf’s contribution to the European Urban Resilience Forum…

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Volunteer in your city

Discover how to participate in one of our six pilots in Athens, Cascais, Dundee, Mannheim, Riga or Utrecht and start collecting environmental data in your neighbourhood.

Join now

Join our Working Groups

Urban ReLeaf is hosting three Working Groups as part of its Community of Practice.

Calls for participation will be launched in January 2024 and January 2025. More information will follow in our newsletter and on social media.

Join now

Triggering innovation in public authorities with citizen-powered science.

Coupling citizen science & Earth Observation for European Green Deal & UN SDG 11 monitoring.

Urban design foresight for Nature Based Solutions (NBS) & Blue Green Infrastructure (BGI) scenario planning.

Our vision for future cities.

Urban ReLeaf believes in empowering vulnerable communities to shape climate change mitigation and green infrastructure actions in their neighbourhoods. Citizens in six cities across Europe are taking part in data collection campaigns on heat stress, humidity and air quality to improve the quality of life in their districts.

Comprehensive and reliable urban data ecosystems will allow policy-makers to develop more effective, tailored, city-specific strategies in the fight against climate change. Together, these can strengthen our cities, making them more resilient, liveable, and accessible for all.

Read more about the project

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