Worst air pollution Mahon - Cork, today and tomorrow

Today (21 July): Air quality in Mahon is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 24.6/100).
Tomorrow (22 July 2026): Air quality in Mahon is fair. All pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 35.7/100). Airmine updates local air quality forecasts four times daily.

For long term forecasts and maps, see the Airmine app

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Use our Strava plugin to check your own exposure.

Mahon's air quality benefits from its Cork Harbour estuary position, with maritime breezes providing reliable ventilation across this southeast Cork city suburb. Vehicle traffic is the primary local source.

Today - 21 July | Pollution peaks at 23:00

AQI:

Fair

24.6/100

PM2.5 (fine particles):

Good

9.1/100

PM10 (coarse particles):

Good

2.9/100

NO2 (nitrogen dioxide):

Fair

24.6/100

O3 (ozone):

Fair

23.8/100

SO2 (sulfur dioxide):

Good

4.6/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

2.7/100

PM1 (ultrafine particles):

Good

9.0/100

Levels show the poorest local air quality during the day

Tomorrow - 22 July | Pollution peaks at 05:00

AQI:

Fair

35.7/100

PM2.5 (fine particles):

Good

12.5/100

PM10 (coarse particles):

Good

4.0/100

NO2 (nitrogen dioxide):

Fair

35.7/100

O3 (ozone):

Fair

30.0/100

SO2 (sulfur dioxide):

Good

4.3/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

4.6/100

PM1 (ultrafine particles):

Good

13.2/100

Other Landmarks in Cork

Sports venues in Cork

Frequently Asked Questions

Is air quality bad in Mahon right now?

On 21 July 2026, overall air quality in Mahon is fair. AQI is the main air quality indicator at 24.6/100. Pollution peaks around 11:00 PM (NO2: 24.6/100).

Will air quality be worse tomorrow in Mahon?

On 22 July 2026, air quality conditions in Mahon will be similar to today, with AQI forecast at fair at 35.7/100. Pollution peaks around 5:00 AM (NO2: 35.7/100).

When is air pollution at its worst in Mahon?

Throughout the year, air quality in Mahon rises and falls with the seasons, shaped by its riverside suburban streets east of Cork city. Mild, wet weather keeps the air clean most of the year, though calm winter evenings can let traffic fumes and solid-fuel heating smoke build up locally. Being away from the busiest city-centre streets usually means slightly calmer conditions than downtown.

Are air quality levels in Mahon 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.

Want to see air quality forecasts for other cities in Ireland?

Check air quality in other popular cities:

Data provided by Airmine — Last update: 21 July 2026 at 16:20 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