Urban Parks Deliver Measurable Cooling, Pollution and Noise Reductions Beyond Their Borders, Study Finds

Researchers from the University of Surrey’s Global Centre for Clean Air Research (GCARE) monitored temperature, PM10 particles and noise inside and around Stoke Park, a 52-hectare green space in Guildford. Published in *City and Environment Interactions*, sensors compared park conditions with adjacent streets.

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

Heat islands, pollution and traffic noise affect health. Green infrastructure is a mitigation tool, yet few studies have quantified how far park benefits extend into nearby neighborhoods.

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

Inside the park, PM10 was 11 % lower and morning temperatures fell 6.5 % versus nearby streets. Tree-shaded areas cut the Physiologically Equivalent Temperature by up to 8.5 °C. Temperature rose 0.5 °C per 100 m outward, persisting to 300 m. Ambient noise fell 5.41 dB, detectable by most listeners.

Parks can cool neighbourhoods and cut pollution hundreds of metres beyond their boundaries, study finds

The cooling, air-quality and noise benefits give metrics for planners seeking climate-resilient design. The evidence supports policies that prioritize park creation, tree canopy expansion and strategic placement of green spaces to mitigate heat stress and improve livability in neighborhoods.

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

Professor Prashant Kumar, GCARE’s founding director, said the study offers actionable evidence for municipal decision-makers to integrate parks into urban design. Post-graduate researcher Soheila Khalili noted shaded areas especially improve thermal comfort, underscoring vegetation’s role in climate adaptation. Sponsors view the results as validation of green-infrastructure research. The research was conducted under the NERC-FAPESP GreenCities project and builds on UKRI-funded RECLAIM Network Plus and GP4Streets initiatives.

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study FindsParks can cool neighbourhoods and cut pollution hundreds of metres beyond their boundaries, study finds

• “Our work shows that parks can bring measurable cuts in heat, pollution and noise both inside parks and across surrounding neighborhoods. This provides stronger evidence for planners and policymakers looking to design healthier and more climate-resilient towns and cities.” — Prashant Kumar, Professor, GCARE

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

• “Cities are having to adapt more and more as the climate continues to warm, so understanding exactly how parks improve environmental conditions can help guide more effective urban design.” — Soheila Khalili, Post-graduate Researcher, GCARE

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

• “The findings showed that PM10 pollution levels – airborne particles and liquid droplets that are 10 micrometers or less in diameter – were more than 11 percent lower inside the park during the morning compared with nearby built-up areas.” — Study Report

Parks Can Cool Neighborhoods and Cut Pollution Hundreds of Meters Beyond Their Boundaries, Study Finds

• “41 decibels (dB) inside park areas – enough for most people to perceive a noticeable difference in noise.” — Study Report

Parks can cool neighbourhoods and cut pollution hundreds of metres beyond their boundaries, study finds

The authors recommend authorities embed park-based cooling strategies in zoning codes and that further monitoring across varied climates refine guidelines for optimal park size and vegetation mix.

Parks can cool neighbourhoods and cut pollution hundreds of metres beyond their boundaries, study finds