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Uherské Hradiště, nestled in the heart of the Zlínský Kraj region of the Czech Republic, occupies a geographically significant position within the Moravian Gate, a historical and strategic corridor connecting Bohemia and Moravia. The city’s coordinates (49.0697, 17.4597) place it within a gently undulating landscape, characterized by fertile plains and rolling hills, a legacy of the region’s glacial history. Situated at an elevation of approximately 230 meters above sea level, Uherské Hradiště benefits from a relatively mild climate, though its location can influence local air quality patterns. The city is bisected by the Morava River, a vital waterway that contributes to the region’s agricultural productivity and provides a degree of natural ventilation. Surrounding Uherské Hradiště is a mosaic of agricultural land, primarily dedicated to grain cultivation and fruit orchards, interspersed with smaller villages and woodlands. To the east, the landscape gradually rises towards the White Carpathian Mountains, influencing prevailing wind patterns. While not directly adjacent to major industrial zones, the city’s proximity to agricultural areas means that seasonal agricultural practices, such as fertilizer application and harvesting, can contribute to localized air pollution episodes. The urban-rural gradient is relatively smooth, with agricultural fields extending almost to the city limits, impacting the dispersion of pollutants and creating a unique microclimate. The Moravian Gate’s historical role as a trade route has also shaped the urban layout, with a compact historical center radiating outwards, influencing how air pollutants are distributed throughout the city.

Uherské Hradiště’s air quality experiences a distinct seasonal cycle, largely dictated by meteorological conditions. Spring (March-May) often sees a rise in pollen levels, impacting respiratory health, and occasional episodes of elevated particulate matter due to agricultural activities like field burning, though regulations are increasingly restricting this practice. Summer (June-August) generally offers the best air quality, with warm temperatures and frequent convective mixing, which disperses pollutants effectively. However, periods of prolonged heat can lead to stagnant air and ozone formation, particularly during sunny, calm days. Autumn (September-November) presents a more complex picture. Cooler temperatures and decreasing sunlight hours can lead to temperature inversions, trapping pollutants near the ground, especially in the mornings. Agricultural activities, including harvesting and the preparation of fields for winter, contribute to particulate matter. The Morava River’s influence can also be felt, with fog forming in low-lying areas, further concentrating pollutants. Winter (December-February) typically brings the poorest air quality. Cold, stable air masses, coupled with temperature inversions, frequently trap pollutants, leading to increased concentrations of particulate matter and other pollutants. Heating systems, reliant on solid fuels in some households, exacerbate the problem. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during periods of stagnant air or high pollution levels, particularly in the mornings during autumn and winter. Monitoring local weather forecasts and air quality reports is crucial for informed decision-making.