Worst air pollution Tallaght, today and tomorrow
Today (21 July): Air quality in Tallaght is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (NO2: 23.3/100).
Tomorrow (22 July 2026): Air quality in Tallaght is good. AQI improves to good; NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 19.0/100). 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
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Tallaght's air quality reflects the southwestern Dublin metropolitan area, with vehicle traffic on the M50 ring road and the surrounding Ballymount industrial and logistics estate generating elevated NOₓ in this major Dublin satellite city. Atlantic westerlies from the Irish Sea generally provide adequate ventilation, while the Dublin Mountains to the south create topographic variation and the concentrated motorway interchange at Tallaght maintains sustained vehicle emission levels throughout the year.
Today - 21 July | Pollution peaks at 05:00
AQI:
Fair
23.3/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Fair
23.3/100
O3 (ozone):
Good
19.3/100
SO2 (sulfur dioxide):
Good
5.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
10.4/100
Levels show the poorest local air quality during the day
Tomorrow - 22 July | Pollution peaks at 16:00
AQI:
Good
19.0/100
PM2.5 (fine particles):
Good
7.7/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
18.1/100
O3 (ozone):
Good
19.0/100
SO2 (sulfur dioxide):
Good
4.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.7/100
PM1 (ultrafine particles):
Good
7.5/100
Pollen forecast in Tallaght
View pollen forecastFrequently Asked Questions
Is air quality bad in Tallaght right now?
On 21 July 2026, overall air quality in Tallaght is fair. AQI is the main air quality indicator at 23.3/100. Pollution peaks around 5:00 AM (NO2: 23.3/100).
Will air quality be worse tomorrow in Tallaght?
On 22 July 2026, air quality conditions in Tallaght will be better than today, with AQI forecast at good at 19.0/100. Pollution peaks around 4:00 PM (O3: 19.0/100).
When is air pollution at its worst in Tallaght?
In Tallaght, air quality changes through the year largely because of its position at the foot of the Dublin Mountains. 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. A shift in the weather, which happens often here, usually clears any buildup within a day.
Are air quality levels in Tallaght 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: 21 July 2026 at 10:44 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