Worst air pollution Sligo, today and tomorrow
Today (16 July): Air quality in Sligo 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: 28.5/100).
Tomorrow (17 July 2026): Air quality in Sligo is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 28.5/100). 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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Sligo's air quality benefits from Ireland's exceptional northwest Atlantic exposure beneath Benbulben, with consistent powerful westerlies providing outstanding maritime ventilation. Vehicle traffic on the N4 is the primary local source.
Today - 16 July | Pollution peaks at 00:00
AQI:
Fair
28.5/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
7.1/100
NO2 (nitrogen dioxide):
Good
1.7/100
O3 (ozone):
Fair
28.5/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
15.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 04:00
AQI:
Fair
28.5/100
PM2.5 (fine particles):
Fair
20.9/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Good
1.9/100
O3 (ozone):
Fair
28.5/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
15.9/100
Pollen forecast in Sligo
View pollen forecastFrequently Asked Questions
Is air quality bad in Sligo right now?
On 16 July 2026, overall air quality in Sligo is fair. AQI is the main air quality indicator at 28.5/100. Pollution peaks around 12:00 AM (O3: 28.5/100).
Will air quality be worse tomorrow in Sligo?
On 17 July 2026, air quality conditions in Sligo will be similar to today, with AQI forecast at fair at 28.5/100. Pollution peaks around 4:00 AM (O3: 28.5/100).
When is air pollution at its worst in Sligo?
Sligo sees clear seasonal swings in air quality, driven in part by its position beneath Ben Bulben on Sligo Bay. Constant sea breezes keep the air clean for most of the year, with only the calmest winter evenings allowing local heating smoke to linger briefly. A shift in the wind off the sea usually clears any buildup within a day.
Are air quality levels in Sligo 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