Worst air pollution Dundalk, today and tomorrow
Today (12 August): Air quality in Dundalk is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (O3: 18.8/100).
Tomorrow (13 August 2026): Air quality in Dundalk is fair. AQI worsens to fair; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 24.8/100). 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 - 12 August | Pollution peaks at 01:00
AQI:
Good
18.8/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Good
14.2/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
6.3/100
Levels show the poorest local air quality during the day
Tomorrow - 13 August | Pollution peaks at 21:00
AQI:
Fair
24.8/100
PM2.5 (fine particles):
Good
12.7/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Fair
24.8/100
O3 (ozone):
Fair
22.8/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
9.3/100
Pollen forecast in Dundalk
View pollen forecastFrequently Asked Questions
Is air quality bad in Dundalk right now?
On 12 August 2026, overall air quality in Dundalk is good. AQI is the main air quality indicator at 18.8/100. Pollution peaks around 1:00 AM (O3: 18.8/100).
Will air quality be worse tomorrow in Dundalk?
On 13 August 2026, air quality conditions in Dundalk will be worse than today, with AQI forecast at fair at 24.8/100. Pollution peaks around 9:00 PM (NO2: 24.8/100).
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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 12 August 2026 at 20:34 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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