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Fene, a coastal municipality in Galicia, Spain, occupies a unique geographic position influencing its air quality. Situated at 43.4667°N, -8.1667°W, the town is nestled along the Ría de Ferrol estuary, a deeply indented inlet of the Atlantic Ocean. The terrain is characterised by a mix of rolling hills and relatively flat coastal plains, with elevations generally below 100 meters. This proximity to the ocean introduces a strong maritime influence, moderating temperatures and increasing humidity. The surrounding landscape is a blend of green agricultural land – primarily pasture and small-scale farming – and patches of pine and eucalyptus forests. While Fene isn’t heavily industrialised, the wider Ferrol area historically hosted shipbuilding and related industries, contributing to localised pollution sources. The urban-rural gradient is relatively sharp; Fene itself is a concentrated settlement, but quickly transitions to more sparsely populated rural areas inland. This coastal location means prevailing winds are generally westerly, carrying pollutants from the Atlantic and potentially dispersing local emissions, but also creating conditions for salt spray and aerosol formation, impacting particulate matter composition. The Ría’s limited flushing capacity can also trap pollutants during periods of calm weather, affecting air quality in the immediate vicinity.

Fene’s air quality follows a distinct seasonal pattern, largely dictated by meteorological conditions. Winters (December-February) often see poorer air quality due to temperature inversions, trapping pollutants near the ground, and reduced wind speeds. Increased wood burning for heating in rural areas surrounding Fene contributes to particulate matter concentrations. Spring (March-May) brings improving conditions with increased rainfall washing away pollutants and stronger winds aiding dispersion. However, agricultural activities, including fertiliser application, can introduce ammonia into the atmosphere. Summers (June-August) generally offer the best air quality, with consistent sea breezes and high temperatures promoting pollutant dispersal. However, occasional heatwaves can exacerbate ozone formation. Autumn (September-November) sees a transition period, with increasing rainfall and cooler temperatures. November can be particularly problematic as heating demand rises again before the full onset of winter. Sensitive individuals – children, the elderly, and those with respiratory conditions – should be particularly cautious during winter months and periods of calm weather. Avoiding strenuous outdoor activity during these times is advisable. Monitoring local forecasts and being aware of wind direction is crucial for mitigating exposure.