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Savona, a coastal city in the Liguria region of Italy, occupies a narrow strip of land between the Ligurian Sea and the foothills of the Apennine Mountains. Its geography is dramatically influenced by this positioning, creating a unique urban character. The city centre hugs the coastline, historically developing around its port, which remains a significant economic driver. The terrain immediately inland rises steeply, creating a complex topography of valleys and hillsides. This elevation gradient impacts air circulation, potentially trapping pollutants during stable atmospheric conditions. Savona benefits from a Mediterranean climate, but its location within a coastal basin can lead to humidity and fog. Surrounding the city are agricultural zones, particularly olive groves and vineyards, interspersed with patches of natural Mediterranean scrubland. While not heavily industrialised compared to other Italian cities, the port and associated industrial activities contribute to localised emissions. The urban-rural gradient is quite sharp; moving inland quickly transitions from dense urban development to more sparsely populated, agricultural landscapes. This proximity to the sea moderates temperatures but also means the city is susceptible to sea breezes that can either disperse or concentrate pollutants depending on prevailing weather patterns. Understanding this interplay of landforms, sea influence, and human activity is crucial for assessing Savona’s air quality.

Savona’s air quality follows a distinct seasonal pattern. Winter, from December to February, often sees the poorest air quality. Reduced sunlight hours and increased heating demand lead to higher particulate matter concentrations from wood burning and fossil fuel combustion. Temperature inversions, common in the coastal valleys, trap pollutants near ground level. Spring (March-May) brings improvement as temperatures rise and rainfall increases, washing away accumulated pollutants. However, agricultural activities, such as fertiliser application, can contribute to ammonia emissions. Summer (June-August) generally offers the cleanest air, driven by strong sea breezes and higher atmospheric mixing. However, increased tourism and associated traffic can cause localised spikes in nitrogen dioxide. Autumn (September-November) is a transitional period. The return to heating, combined with calmer weather, can lead to a gradual deterioration in air quality. Fog, a frequent occurrence during autumn mornings, exacerbates pollution by trapping pollutants. Sensitive individuals – children, the elderly, and those with respiratory conditions – should be particularly cautious during winter and autumn months. Avoiding strenuous outdoor activity on still, foggy days is advisable. Monitoring local forecasts and limiting exposure during peak pollution periods is recommended for maintaining respiratory health throughout the year.