University of Southampton response to 'Fine particulate matter air quality targets' Welsh Government consultation

On balance, the authors agree with the ambition of Wales’ AMCT (Annual Mean Concentration Target). It is technically achievable given current constraints, comparatively ambitious within the UK, and health‑ and value‑positive, especially when coupled with the proposed PERT. The key is to lock in interim milestones and an early review (including rapid establishment of the necessary additional monitoring stations), so that Wales can tighten the date if transboundary and domestic measures deliver faster‑than‑expected gains.

This response also agrees with the level of ambition for Wales’ PERT (Population Exposure Reduction Target), it is evidence based, health led, and feasible given transboundary constraints, while the twin track with the AMCT locks in equity and continuous improvement. The key is to operationalise ambition with interim milestones, strengthened monitoring, and a scheduled early review so that ambition can be tightened if real world progress allows.

The authors neither agree nor disagree with the Welsh Government's proposed arrangements for assessing PM2.5 levels and achievement of the targets. While sound, the arrangements need strengthening.