Worst air pollution Dundalk, today and tomorrow
Today (16 July): Air quality in Dundalk is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (O3: 28.7/100).
Tomorrow (17 July 2026): Air quality in Dundalk is fair. All pollutants stay as today. Pollution peaks around 6:00 AM (O3: 28.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Dundalk's air quality benefits from its position between Dublin and Belfast near the border, with vehicle traffic on the M1 motorway the primary local source amid generally good Atlantic-influenced ventilation.
Today - 16 July | Pollution peaks at 00:00
AQI:
Fair
28.7/100
PM2.5 (fine particles):
Good
13.9/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Good
1.0/100
O3 (ozone):
Fair
28.7/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
10.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Fair
28.1/100
PM2.5 (fine particles):
Good
15.2/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Good
0.8/100
O3 (ozone):
Fair
28.1/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
12.3/100
Pollen forecast in Dundalk
View pollen forecastFrequently Asked Questions
Is air quality bad in Dundalk right now?
On 16 July 2026, overall air quality in Dundalk is fair. AQI is the main air quality indicator at 28.7/100. Pollution peaks around 12:00 AM (O3: 28.7/100).
Will air quality be worse tomorrow in Dundalk?
On 17 July 2026, air quality conditions in Dundalk will be similar to today, with AQI forecast at fair at 28.1/100. Pollution peaks around 6:00 AM (O3: 28.1/100).
When is air pollution at its worst in Dundalk?
Throughout the year, air quality in Dundalk rises and falls with the seasons, shaped by its position near Dundalk Bay close to the Irish border. Sea winds dominate the local climate, generally keeping pollution low, though calm winter evenings occasionally let home-heating smoke build up close to the ground. A shift in the wind off the sea usually clears any buildup within a day.
Are air quality levels in Dundalk based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in Ireland?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app