The above index is for overall Air Quality in Zone C 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 C.
Measurement of PM10 and PM2.5 began in March 2009. The measurement method used for PM10 and PM2.5 is not automatic therefore results are not available immediately. A sulphur dioxide analyser was installed in January 2010. Monitoring is done using a continuous analyser. The most recent available results can be viewed through the link below.
An air quality assessment for all required parameters was carried out at Ennis in 2006/2007. The site was located in the Ennis Town Council yard. During the assessment monitoring was done by a mobile unit containing continuous monitors for sulphur dioxide, nitrogen oxides, carbon monoxide and benzene. Continuous samples were also taken for particulates PM10 and lead.
Results were collected from 25th January 2006 to 18th April 2007 and compared with the Assessment Thresholds in the Air Quality Regulations to determine the long term monitoring necessary.
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