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The Environmental Protection Agency manages the National Ambient Air Quality Network.
The Air Quality Index for Health is calculated every hour and tells you if air quality is good, fair, poor or very poor in your region. The above index is for overall air quality in the Rural West AQIH Region. You can find out if air quality is likely to affect your health and what you can do to protect your health on the Air Quality Index for Health page.
The Mace Head site is located at the Mace Head Atmospheric Research Station operated by NUI, Galway, near Carna on the west coast. The ozone measurements are funded by the UK Department of Environment, Food and Rural Affairs.
Monitoring is done using a continuous monitor for ozone. The latest results can be viewed through the link below. This work is ongoing.
Total gaseous mercury is also monitored at Mace Head by GKSS, Germany, funded by the EPA as part of a long term measurement study. Data is available to download from the EPA's SAFER database.
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