Archive of Monitoring Data

This page contains the monitoring data compiled by the Housing and Public Protection Department over the last few years. Results are shown for the following monitoring techniques:

• Diffusion Tubes
• Partisol Plus PM₁₀ Monitors

Results for the Automatic Urban and Rural Network station can be accessed at either of the following external websites:

Welsh Air Quality Archive

The Air Quality Archive

(Gaps in the data sets indicate periods where the monitoring data is not available).

Benzene Graphs

Benzene Graphs - Excel format 51Kb

NO₂ Graphs

NO₂ Graphs - Excel format 415Kb

Ozone Graphs

Ozone Graphs - Excel format 47Kb

PM₁₀ Graphs

PM₁₀ Graphs - Excel format 266Kb

SO₂ Graphs

SO₂ Graphs - Excel format 99Kb

To view or download any spreadsheet (.XLS) document you will normally require Microsoft Excel to be installed on your computer. If you do not have Microsoft Excel then an Excel Viewer is freely available from Microsoft - download the free Microsoft Excel Viewer 2003 for Windows 2000, Windows Server 2003, Windows XP.

The Microsoft Excel Viewer will allow you to view the document and print the document, it will not allow you to edit it. Please install the Excel viewer after downloading the software.