The national Ambient Air Quality Monitoring Programme is operated, maintained and monitored by the Environmental Protection Agency (EPA). However, my Department has provided funding for a significant upgrade to the network in recent years and, as a result, the number of monitoring stations has increased from 29 in 2017 to 102 today. All stations collect air quality data for a range of pollutants in order to provide information to the public, and for assessment against European legal limit values and World Health Organisation guideline values. Details of the locations of all monitoring stations currently in operation, along with real-time and historic data from each station, can be found at the EPA-operated website, www.airquality.ie. The final expansion of the network is expected to be completed by the end of this year and will increase the number of official stations to 116.