The above index is for overall Air Quality in Zone D and not just at this station. The index is calculated based on the latest available measurements of ozone, nitrogen dioxide, PM10 and sulphur dioxide in Zone D.
The Mountrath site was located in the yard of the old primary school on Patrick St., approximately 10m from the N7. Monitoring began on 23rd September 2004 and finished on June 14th 2005.
This work is part of a comprehensive assessment of air quality across Ireland. Mountrath was chosen as representative of a small town on a major road; the N7 between Dublin and Limerick passes through the town.
Monitoring was done by a mobile unit containing continuous monitors for sulphur dioxide, nitrogen oxides, carbon monoxide, PM10 and benzene.
Metals in air were measured by pumping air through filters which were changed at regular intervals.
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