Air Quality Levels UK

Lisburn Dunmurry Seymour Hill (Lisburn and Castlereagh)

Location: Belfast

Local authority: Antrim

UK Region: Northern Ireland

UK-Air ID: LIS5

EU Site ID:

Environment type: Urban Background

Site operator: Northern Ireland Air

DEFRA Region: Northern Ireland

Pollutants Measured:

  • Sulphur Dioxide
  • PM10 Particles
  • PM2.5 Particles

This site is not included in the Air Pollution Index published data.

Last ten days of raw data, by hour

Click/tap on the graph legend to show/hide pollutants. Note that the Air Quality Index is determined by the pollutant banding, not the absolute value, so the largest value on this graph may not be the most omportant pollutant. See How the Daily Air Quality Index is calculated for more information.

Long term data, maximum values per day

Click/tap on the graph legend to show/hide pollutants. The graph starts with all measured pollutants visible, but this can make the graph a bit messy if there are several of them. Not all pollutants may have been recorded over the full time this monitoring station has been in operation. Note that the Air Quality Index is determined by the pollutant banding, not the absolute value, so the largest value on this graph may not be the most omportant pollutant. See How the Daily Air Quality Index is calculated for more information.

Other nearby monitoring locations

Current values at monitoring stations may not match today's forecast, because the forecast is an expected maximum whereas the current value is the most recent snapshot. Pollution levels typically peak in the afternoon or evening, and then drop overnight.

© 2026 Crown copyright Defra via uk-air.defra.gov.uk, licenced under the Open Government Licence (OGL).

All public sector data is licensed under the Open Government Licence v2.0.

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