Ozone, Nitrogen Dioxide and Sulphur Dioxide Levels in Rathmines, Dublin

The units for ozone, nitrogen dioxide and sulphur dioxide are in microgrammes per cubic meter.

The NO 2 hourly limit of 200 ug m -3 is deemed breached if more than 18 exceedances have occurred.

hourly limit of 200 ug m is deemed breached if more than 18 exceedances have occurred. The SO 2 hourly limit of 350 ug m -3 is deemed breached if more than 24 exceedances have occurred.

hourly limit of 350 ug m is deemed breached if more than 24 exceedances have occurred. The O 3 information threshold is 180 ug m-3.

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.