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Stará Ľubovňa, nestled in the Prešov Region of northeastern Slovakia, occupies a geographically compelling position within the Eastern Carpathian foothills. The city’s location at 49.3167°N, 20.6833°E, is defined by a valley landscape carved by the Poprad River, which significantly influences local microclimates and air dispersal. Elevation varies considerably, rising towards the Levoča Hills to the west and the Poloniny National Park further east, creating topographic barriers to air flow. This terrain contributes to potential temperature inversions, trapping pollutants during stable atmospheric conditions. The surrounding landscape is predominantly forested, transitioning to agricultural land in the valley floor, with smaller pockets of residential and light industrial activity. While not a major industrial hub, the presence of smaller workshops and wood processing facilities contributes to localised emissions. The urban-rural gradient is relatively sharp; the city quickly gives way to extensive forests and mountainous terrain. This proximity to natural areas generally benefits air quality, but the valley’s topography can concentrate pollution during calm periods, particularly during winter heating seasons. The Poprad River, while a vital resource, doesn’t offer significant dispersion of airborne pollutants. The city’s position within a broader regional network means it’s also susceptible to transboundary pollution from neighbouring areas.

Air quality in Stará Ľubovňa exhibits a distinct seasonal pattern. Winter, from November to February, typically sees the poorest air quality. Low temperatures drive increased residential heating using solid fuels – coal and wood – which are significant sources of particulate matter (PM) and other pollutants. Stable atmospheric conditions and frequent temperature inversions exacerbate the problem, trapping pollutants in the valley. Spring (March-May) brings gradual improvement as heating demand decreases and increased precipitation helps cleanse the air. However, agricultural activities, including burning of crop residues, can cause temporary spikes in pollution. Summer (June-August) generally offers the cleanest air, with prevailing winds aiding dispersion and minimal heating. However, prolonged periods of hot, dry weather can lead to increased ground-level ozone formation. Autumn (September-October) sees a return to deteriorating conditions as heating begins again, coupled with damp, foggy conditions that limit air circulation. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter and autumn. Monitoring weather forecasts for temperature inversions is crucial. Avoiding peak heating hours and staying indoors during periods of high pollution are recommended preventative measures.