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Air Quality Bulletin - Nitrogen Dioxide December 2011

The hourly limit for NO₂ is 200 ug/m³. The limit is deemed breached if more than 18 exceedances occur during the year. The table below shows the number of exceedances at stations in Ireland based on available data to 31 December 2011.

Station Name	Number of values greater than 200 ug/m³(year to date)^a	Station Location	Station Type	Data available to	Station Operator
Ringsend	0	Dublin 4	Urban Traffic	31 December	EPA
Rathmines	0	Dublin 6	Urban Background	31 December	EPA
Coleraine Street	0	Dublin 7	Urban Traffic	31 October	Dublin City Council
Winetavern Street	0	Dublin 8	Suburban Background	31 October	Dublin City Council
Blanchardstown	0	Dublin 15	Suburban Traffic	31 December	Fingal County Council
Dún Laoghaire	0	Co. Dublin	Suburban Background	31 December	Dun Laoghaire Rathdown County Council
Swords	1	Co. Dublin	Suburban Background	31 December	EPA
Old Station Road	1	Cork City	Urban Traffic	31 December	Cork City Council
Park Road	0	Limerick City	Suburban Background	31 December	EPA
Shannon	0	Co. Clare	Suburban Background	31 December	EPA
Glashaboy	0	Co. Cork	Suburban Background	31 December	EPA
Castlebar	0	Co. Mayo	Suburban Background	31 December	EPA
Kilkitt	0	Co. Monaghan	Rural Background	31 December	EPA
Shannon	0	Co. Clare	Suburban Background	31 December	EPA

^a Exceedance Dates:
Swords: 31 January
Old Station Road: 31 January