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Skýdra, nestled within the Kentrikí Makedonía region of Greece, occupies a geographically significant position at approximately 40.7667° N, 22.1500° E. The city’s terrain is characterized by gently rolling hills, a typical feature of the broader Thessalian Plain, which extends to the south. Its elevation, around 250 meters above sea level, contributes to localized microclimates and influences air circulation patterns. Skýdra sits on the fringes of the plain, bordering the foothills of the Cambúnos mountain range to the west, providing a degree of shielding from prevailing westerly winds but also creating potential for stagnant air conditions under certain meteorological circumstances. The surrounding landscape is predominantly agricultural, with extensive fields of wheat, barley, and olives dominating the rural areas. This agricultural activity, while vital to the regional economy, can contribute to particulate matter pollution, particularly during harvest seasons when machinery is in heavy use and soil is disturbed. To the east, the plain gradually transitions into more densely populated areas and light industrial zones, though Skýdra itself maintains a relatively rural character. The absence of major rivers directly adjacent to the city limits its influence on humidity and precipitation patterns, though occasional rainfall events do help to cleanse the atmosphere. The urban–rural gradient around Skýdra is gradual, with small villages and scattered farms defining the immediate periphery, minimizing the abrupt transition often seen in larger urban centers. This relatively isolated location, combined with a small population of 18,325, generally results in lower baseline pollution levels compared to larger Greek cities, though localized sources remain a concern.

Skýdra’s air quality experiences a distinct seasonal cycle dictated by its Mediterranean climate. Summers (June-August) are typically hot and dry, characterized by prolonged periods of sunshine and minimal rainfall. This lack of precipitation, coupled with high temperatures, often leads to temperature inversions, where a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing. Agricultural activities intensify during this period, contributing to increased dust and particulate matter. Autumn (September-November) brings a gradual shift, with increased rainfall and slightly cooler temperatures. While rainfall helps to clear the air, agricultural burning, a traditional practice for land preparation, can significantly degrade air quality during this transition. Winter (December-February) is the most challenging period. Cold, stable air masses frequently settle over the region, leading to prolonged periods of fog and temperature inversions, trapping pollutants close to the ground. Residential heating, often reliant on solid fuels, further exacerbates the problem. Spring (March-May) offers a welcome respite, with increasing sunshine, warmer temperatures, and more frequent rainfall, gradually improving air quality. The months of July and August, due to the prevalence of inversions and agricultural activity, should be approached with caution, particularly for individuals with respiratory conditions. Sensitive groups, including children, the elderly, and those with pre-existing respiratory illnesses, should limit outdoor exertion during periods of fog or stagnant air, especially during winter months. Maintaining indoor air quality through proper ventilation and air filtration is also advisable throughout the year.