Northern Ireland's Department of Agriculture, Environment and Rural Affairs has published a synopsis of responses to its consultation on proposals to tighten legal air quality standards for particulate matter.

The 12-week public consultation on the draft Air Quality (Amendment) Regulations (Northern Ireland) 2026 closed on 31 August 2026. It proposed stricter annual average limits, targets and objectives for particulate matter.

Analysis of the responses shows broad support for the proposals, with the majority of respondents agreeing that tighter particulate matter standards should be introduced.

The department states that particulate matter, contained in fumes or smoke, can harm human health. Some types act as a direct respiratory irritant, while others increase the risk of heart disease and stroke.

Minister Muir said the measures would align Northern Ireland with tightening standards across the UK and with more up-to-date international guidance. He added that recent monitoring indicates the targets are achievable, with most monitoring sites already meeting the proposed limits.

The tighter controls are intended to support related actions and targets in the draft Clean Air Strategy and draft Climate Action Plan. The draft Clean Air Strategy is currently out for consultation.

Subject to Assembly approval, the Regulations will be introduced later in 2026 and will establish updated particulate matter standards reflecting the latest evidence on air quality and health impacts.

The synopsis of responses is available on the DAERA website.