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Amés, nestled in the heart of Galicia, Spain, occupies a geographically significant position within the Serra do Eume Natural Park, a landscape dominated by lush Atlantic forests and rolling hills. Located at approximately 42.9000° N, -8.6333° W, the town sits at an elevation ranging from 200 to 400 meters above sea level, contributing to localized microclimates. The surrounding terrain is characterized by a mix of agricultural land, primarily dedicated to dairy farming and maize cultivation, and extensive woodland. The Mero River flows through Amés, providing a vital water source and influencing local humidity levels. While not directly coastal, Amés benefits from the maritime influence of the Atlantic Ocean, moderating temperatures and impacting precipitation patterns. The urban fabric of Amés is relatively compact, exhibiting a gradual urban-rural gradient as one moves outwards from the town center. The Serra do Eume Natural Park acts as a natural barrier to the north, limiting prevailing winds and potentially trapping pollutants under certain meteorological conditions. Industrially, Amés is not a major hub, but smaller-scale manufacturing and agricultural processing facilities exist, contributing localized emissions. The proximity to larger Galician cities like Santiago de Compostela, approximately 20 kilometers to the southeast, means Amés is also subject to some degree of transboundary pollution transport, particularly during periods of atmospheric stagnation. The overall landscape, a blend of agricultural fields, dense forests, and the river valley, plays a crucial role in the dispersion and accumulation of airborne pollutants.

Amés experiences a temperate oceanic climate, significantly influencing its air quality throughout the year. Spring (March-May) typically sees a gradual improvement in air quality as temperatures rise and vegetation begins to absorb pollutants. However, frequent rainfall can lead to increased humidity and occasional fog, which can temporarily trap particulate matter. Summer (June-August) generally offers the best air quality, with drier conditions and more consistent winds dispersing pollutants. However, heatwaves can trigger temperature inversions, particularly in the valleys, leading to localized pollution build-up. Autumn (September-November) marks a shift, with increased rainfall and decreasing sunlight hours. Agricultural activities, such as harvesting and fertilizer application, can contribute to ammonia emissions. Winter (December-February) often presents the most challenging period for air quality. Cold, stable air masses frequently lead to temperature inversions, trapping pollutants close to the ground. Fog is common, further exacerbating the issue. The prevailing westerly winds, typical of Galicia, are often weaker during winter, reducing the natural ventilation. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during winter months, particularly on days with low visibility or stagnant air. Outdoor activities are generally more favorable during the summer months, but awareness of potential temperature inversions is crucial. The agricultural cycle, with its associated emissions, impacts air quality most noticeably during autumn and spring, requiring careful management practices to minimize environmental impact.