Clean Air Together

 Sun, 10th Apr, 2022

Clean Air Together - Dublin

Ardgillan College were delighted to be one of the 1,000 Clean Air Together (Dublin) citizen scientists who found out about the NO2 levels in our local area and to be able to provide the data to Environmental Protection Agency (EPA) for its work.

Our NO2 measurement tube was in place for approximately one month. The result for our sample (sample number 1845237) was 7.64 micrograms per cubic meter.

For comparison and to see the whole map and read more about Clean Air Together go to or read the attachment below. The map shows measurements within 500 meters of your location. The average reading in your area was 7.64 micrograms per cubic meter.

The higher results (30 - 40 micrograms per cubic meter and 20 - 30 micrograms per cubic meter) were found in the city centre within the canals, along some of the national and regional roads, and near the M50. These roads include:

  • Pearse street by Trinity College Dublin
  • Roads by Connolly and Heuston stations
  • The Malahide and Botanic roads, Dorset street, the Swords, Donnybrook, and Crumlin roads
  • The quays north and south of the Liffey
  • The M50, especially near the Palmerstown and Blanchardstown interchanges

By contrast, the lowest results (0 - 10 micrograms per cubic meter) were found in countryside areas of Dublin such as Balscadden (North County Dublin/Fingal), Rathmichael or Old Connaught and in outer suburban areas such as Stepaside or Saggart.

Light blue dots (10 - 20 micrograms per cubic meter) covered most of Dublin suburbs, especially away from major roads.

The overall results are not too surprising and show that the more traffic there is in an area, the higher the levels of NO2.

Our measurements will now be used by the Environmental Protection Agency to improve their air quality models for Dublin, so that a better picture of NO2 pollution in Dublin can be developed. This will in turn help guide policy to improve air quality across the city.

To learn more about air quality in Dublin go to