Dublin City Council measures ambient air quality in Dublin in accordance with Air Quality standards. 'This dataset contains Air Quality Monitoring Data from 2011 and 2012, consisting five spreadsheets taken from five air monitoring sites around Dublin City that show hourly results for the pollutants Sulphur Dioxide (SO2) , Nitrogen Dioxide (NO2), Carbon Monoxide ( CO) and Particulate Matter (PM2.5 & PM10). The regulations are set by the Clean Air for Europe Directive 2008 (2008/50); from January 1st, 2010 the directive also requires PM2.5 monitoring. There is no real time data for PM10 or PM25. Black smoke monitoring is also carried out as a form of background monitoring using the benchmark of EU Directive 80/779/EEC as a guide however this has been scaled down since the 1990s following the introduction of the coal ban. 'Multi-pollutant sites are: Winetavern Street PM10, NO2, CO, SO2 ,Coleraine Street- PM2.5, NO2, CO, SO2 ,Ballyfermot PM10, NO2, SO2 ,PM10 only sites include: Phoenix Park ,Rathmines ,PM2.5 only: Marino ,Black Smoke: Ringsend, Crumlin, Finglas, Cabra. Annual reports from 2004 published here: http://www.dublincity.ie/WaterWasteEnvironment/AirQualityMonitoringandNoiseControl/AirPollution/Pages/AnnualReports.aspx