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Skvyra, nestled within the Kyivska Oblast of Ukraine at coordinates 49.7167°N, 29.6667°E, occupies a gently undulating landscape characteristic of the Dnieper Lowland. The town’s elevation, averaging around 220-240 meters above sea level, contributes to relatively stable atmospheric conditions, potentially trapping pollutants. Skvyra is situated approximately 85km southwest of Kyiv, placing it within a region transitioning from densely populated urban centres to more expansive agricultural lands. The Ros’ River, a tributary of the Ros’ River basin, flows nearby, influencing local humidity and potentially contributing to fog formation, which can exacerbate pollution events. The surrounding terrain is predominantly farmland, with significant areas dedicated to grain cultivation and livestock farming. While Skvyra isn’t a major industrial hub, the presence of smaller agricultural processing facilities and transport links connecting it to larger industrial zones further east and north can introduce localised pollution sources. The urban-rural gradient is pronounced; the town itself is compact, surrounded by open fields and scattered villages. This proximity to agricultural activity means seasonal burning of crop residue is a key factor influencing air quality. The prevailing winds, generally from the west and northwest, can transport pollutants from regional sources towards Skvyra, impacting baseline air quality levels.

Skvyra experiences a temperate continental climate, resulting in distinct seasonal air quality patterns. Spring (March-May) often sees a deterioration in air quality due to agricultural burning practices as farmers prepare fields for planting, releasing particulate matter and other pollutants. Winds are variable, sometimes failing to disperse these emissions effectively. Summer (June-August) generally offers improved air quality, aided by higher temperatures and increased wind speeds, which promote dispersion. However, prolonged heatwaves can lead to stagnant air and localised ozone formation. Autumn (September-November) brings a return of agricultural burning, coupled with the onset of temperature inversions – a common meteorological phenomenon where a layer of warm air traps cooler, polluted air near the ground. This is often the period of poorest air quality. Winter (December-February) sees reduced agricultural activity, but increased reliance on solid fuel heating sources, such as wood and coal, for residential heating. This leads to elevated levels of particulate matter, particularly PM2.5 and PM10. Sensitive groups, including children, the elderly, and those with respiratory conditions, should limit outdoor exertion during autumn and winter months. Monitoring wind direction is crucial; westerly winds may bring pollutants from larger regional sources.