Air Quality Monitoring in Castlebar

The Environmental Protection Agency manages the National Ambient Air Quality Network.  Find out more information about what we monitor.

The air quality index for Castlebar is calculated on an hourly basis under the Small Towns AQIH Region. The Air Quality Map  shows you if air quality is good, fair, poor or very poor in your 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.

Particulate matter (PM10), ozone and nitrogen oxides are measured at this site. The monitors are located in the grounds of the EPA offices on the outskirts of Castlebar.

The measurement method used for PM10 is not automatic therefore the results are not available immediately. Benzo(a)Pyrene and Heavy Metals are also measured at this site.

The most recent available results can be viewed through the links below.

Historical air monitoring information

Historical air monitoring data can be downloaded here Castlebar.