Nitrogen Dioxide and Sulphur Dioxide Levels in Ringsend, Dublin

NOTE: The spikes in the SO2 graph above are associated with a new instrument calibration configuration at the site and are not ambient air measurements.

The units of Nitrogen Dioxide and Sulphur Dioxide are in microgrammes per cubic meter.

• The NO₂ hourly limit of 200 ug m^-3 is deemed breached if more than 18 exceedances have occurred. 
• The SO₂ hourly limit of 350 ug m^-3 is deemed breached if more than 24 exceedances have occurred.

The Graph shows the latest available results over the last 14 days.

Sharp changes are often due to maintenance or other instrument effects and should be treated cautiously.

This data has not yet been validated as it is received automatically from the site.