School of Chemistry Researchers Tackle Air Pollution in the TownAir Project

13 Apr 2026

Researchers from the School of Chemistry and Sustainability Institute are leading efforts to understand the sources of air pollution in towns across Ireland.

Working with University of Galway and local authorities on the EPA-funded TownAir project, the UCC team led by Dr Stig Hellebust and Prof John Wenger, are using a network of sensors to pinpoint and map pollution in towns historically affected by poor air quality in winter months.

Following a successful campaign in Enniscorthy in 2024/2025, the research team have moved onto Ennis, where they have been monitoring the key air pollutants PM_2.5 and NO₂ at 17 locations across the town since the start of winter 2025/2026.

Preliminary results from the monitoring campaign in Ennis were presented by the TownAir project team at a public event organised by Clare County Council in De Valera Library, Ennis. They confirm domestic fires and stoves as the dominant source of PM_2.5 pollution, with older residential areas of the town identified as hotspots. A public survey has been launched to find out more about home heating habits in Ennis.

As part of the project, the TownAir research team also met with students from Rice College, Coláiste Muire, and St Flannan’s College. Participating students learned how air quality is measured, the sources of air pollution and the practical steps communities can take to improve local air.

Professor of Chemistry at University College Cork, John Wenger, said: “TownAir is the most detailed study of its kind, giving us the ability to accurately measure air quality so that we can better manage it. The data being collected in Ennis will allow us to pinpoint where pollution comes from and how it varies across the town. This insight will guide effective, science‑based solutions.”

Brendan Flynn, senior executive engineer in the environment department at Clare County Council, said: “We are committed to improving air quality in Ennis and the TownAir project team are providing us with the evidence we need to support meaningful action. 

Further information about the TownAir project is available at universityofgalway.ie/townair