Worst air pollution Spanish Arch - Galway, today and tomorrow

On 21 July 2026, overall air quality in Spanish Arch is medium. AQI is the main air quality indicator at 42.2/100. Pollution peaks around 4:00 AM (NO2: 42.2/100).

On 22 July 2026, air quality conditions in Spanish Arch will be worse than today, with AQI forecast at fair at 37.3/100. Pollution peaks around 11:00 PM (NO2: 37.3/100).

Throughout the year, air quality in Spanish Arch rises and falls with the seasons, shaped by its historic harbourside setting in Galway city. Air quality here is generally excellent year-round, kept clean by near-constant Atlantic wind and rain, with summer visitor traffic the only modest local source. Outside of peak tourist season, conditions here are about as clean as anywhere in Ireland.

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.

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.