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Torre del Greco, nestled within the densely populated and historically significant Campania region of Italy, occupies a unique and challenging geographic position. Located approximately 20 kilometers southeast of Naples, its coordinates (40.7853, 14.3953) place it on a relatively low-lying coastal plain, just inland from the Tyrrhenian Sea. The terrain is characterized by gently sloping hills and volcanic soils, a legacy of the region's geological history. The surrounding landscape is a complex mosaic of urban sprawl, agricultural land, and pockets of Mediterranean scrubland. To the west lies the sea, providing a potential pathway for marine-borne pollutants and influencing local weather patterns. Inland, the Phlegraean Fields, a volcanic area known for its geothermal activity and fertile soils, contribute to a complex interplay of environmental factors. Torre del Greco’s proximity to Naples, a major industrial and transportation hub, exposes it to pollutants originating from that city. The urban–rural gradient is gradual, with agricultural zones, primarily focused on citrus cultivation and olive groves, interspersed within the expanding urban fabric. The city’s elevation, averaging around 30 meters above sea level, exacerbates the potential for temperature inversions, particularly during the cooler months, trapping pollutants close to the ground. The presence of numerous small-scale industrial activities, including ceramics and metalworking, further contributes to localized air quality challenges, compounded by the region’s generally warm and sunny climate which can promote photochemical smog formation.

Torre del Greco’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions. Summer months (July and August) typically see increased temperatures and reduced rainfall, leading to stagnant air conditions and a higher propensity for photochemical smog. Solar radiation drives the formation of ozone, a key component of smog, while light winds limit its dispersion. Autumn (September-November) can be variable, with occasional periods of improved air quality due to more frequent rainfall and stronger winds, but also periods of stagnation when high-pressure systems dominate. Winter (December-February) often brings the most concerning air quality challenges. Temperature inversions, where a layer of warm air sits above cooler air near the ground, become more frequent, trapping pollutants and leading to elevated concentrations. The relatively flat terrain and coastal location can also funnel pollutants from Naples and surrounding industrial areas. Spring (March-June) generally sees a gradual improvement in air quality as temperatures rise, winds increase, and rainfall becomes more common, dispersing pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during winter months and hot, still summer days. Limiting outdoor exertion during peak pollution episodes and monitoring local air quality reports are advisable. The agricultural practices in the surrounding areas, particularly the use of fertilizers and pesticides, can also contribute to seasonal fluctuations in air quality, with potential impacts during planting and harvesting periods. Fog, common during the cooler months, further exacerbates the issue by trapping pollutants.