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Storozhynets, nestled within the Chernivetska Oblast of southwestern Ukraine, occupies a geographically significant position at approximately 48.16°N, 25.72°E. The town’s setting is characterized by a gently undulating terrain, part of the larger Bukovyna region, which transitions from the Carpathian foothills to the Dniester River basin. Elevation ranges from roughly 180 to 250 meters above sea level, influencing local air circulation patterns. The surrounding landscape is predominantly agricultural, with extensive fields of grain and sunflowers interspersed with pockets of deciduous forest. This agricultural activity, particularly during harvest seasons, contributes to particulate matter in the air. Storozhynets sits on the edge of an urban–rural gradient; while it maintains a distinct small-town character, it’s connected to larger regional centers like Chernivtsi, facilitating the movement of goods and people and potentially introducing pollutants from further afield. The town is not directly adjacent to a major river, though smaller streams and tributaries crisscross the area, which can influence humidity and local weather systems. Historically, the region has seen limited heavy industry, but the presence of smaller agricultural processing facilities and transportation infrastructure contributes to localized emissions. The topography, with its gentle slopes, can sometimes trap pollutants, especially during periods of calm weather, leading to localized air quality challenges. The prevailing winds generally flow from the northwest, carrying air masses across the agricultural plains and potentially impacting Storozhynets’ air quality.

Storozhynets experiences a continental climate, resulting in distinct seasonal variations that significantly impact air quality. Spring (March-May) often brings a gradual improvement as temperatures rise and vegetation begins to grow, naturally filtering some pollutants. However, agricultural activities, including fertilizer application and early field work, can release ammonia and particulate matter. Summer (June-August) typically sees relatively good air quality due to increased convective mixing – warmer air rising and dispersing pollutants. However, periods of intense heat can lead to stagnant air and ozone formation. Autumn (September-November) presents a more complex picture. Harvest season intensifies agricultural emissions, and the increased use of machinery contributes to particulate pollution. Temperature inversions, common during clear, calm autumn nights, trap pollutants near the ground, leading to poorer air quality. Fog, frequent in autumn, exacerbates this issue by reducing visibility and hindering pollutant dispersion. Winter (December-February) often brings the most challenging air quality conditions. Cold temperatures and frequent temperature inversions lead to pollutant accumulation. Residential heating, primarily using solid fuels like wood and coal, significantly increases particulate matter and carbon monoxide levels. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during prolonged periods of cold, calm weather and high fog density. Spring and early summer offer the most favorable periods for outdoor recreation, but awareness of agricultural practices is advised. Avoiding strenuous activity during harvest season and periods of stagnant air is recommended for all residents.