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Manfredonia, nestled along the Gulf of Manfredonia in Puglia, southern Italy, occupies a geographically significant position where the Tavoliere Apulia plateau meets the Adriatic Sea. The city’s terrain is characterized by a gently sloping coastal plain, rising gradually towards the foothills of the Gargano promontory to the east. This proximity to the Gargano, a UNESCO World Heritage site, influences local weather patterns and contributes to a unique microclimate. The gulf itself plays a crucial role, providing a natural ventilation pathway that can, at times, disperse pollutants, but also trap them under specific meteorological conditions. Manfredonia’s urban fabric is a blend of historic architecture and modern development, extending along the coastline and inland towards the plateau. The surrounding landscape is predominantly agricultural, with extensive olive groves, vineyards, and cereal fields dominating the Tavoliere. This agricultural activity, while vital to the regional economy, can contribute to localized air pollution through the use of fertilizers and machinery emissions. Further inland, the transition to rural areas is gradual, with small villages and scattered farms defining the urban–rural gradient. The city’s location within the broader Adriatic industrial belt, though not directly adjacent to major heavy industry, means it can be affected by transboundary pollution events. The relatively low elevation of Manfredonia (averaging around 10 meters above sea level) can exacerbate the impact of temperature inversions, trapping pollutants closer to the ground, particularly during calmer periods.

Manfredonia’s air quality experiences a distinct seasonal cycle heavily influenced by regional weather patterns. Summer, spanning June to August, typically sees drier conditions and increased temperatures, often leading to stagnant air and a higher propensity for photochemical smog formation. While sea breezes can provide some relief, prolonged periods of calm can trap pollutants, particularly those from agricultural activities and vehicle emissions. Spring (March-May) and Autumn (September-November) generally offer the most favourable air quality, with more frequent wind patterns dispersing pollutants. However, autumn can also bring occasional episodes of biomass burning from agricultural practices, contributing to particulate matter. Winter (December-February) presents a mixed picture. While cooler temperatures can reduce photochemical smog, the increased use of domestic heating, often reliant on older, less efficient systems, can elevate particulate matter concentrations. Fog, common during winter mornings, further exacerbates this issue by trapping pollutants near the ground. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during periods of stagnant air, particularly in summer and winter. Outdoor activities are generally best enjoyed during the spring and autumn months, avoiding early mornings in winter due to potential fog-related pollution. Awareness of agricultural burning practices is also crucial, as smoke plumes can significantly impact local air quality during harvest seasons.