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Yenipazar, nestled within Aydın Province in southwestern Turkey, occupies a geographically significant position at approximately 37.83° N, 28.19° E. The town’s location within the fertile Meander River basin profoundly shapes its character and, consequently, its air quality profile. Situated at an elevation of roughly 280 meters above sea level, Yenipazar benefits from a gently sloping terrain, transitioning from the alluvial plains of the Meander to the foothills of the Pindus Mountains to the north. This proximity to the mountains can, at times, contribute to localized air stagnation, particularly during periods of temperature inversion. The surrounding landscape is predominantly agricultural, characterized by extensive olive groves, fig orchards, and vineyards – a defining feature of the Aydın region. This intensive agricultural activity, while economically vital, introduces potential sources of particulate matter, particularly from soil erosion and the use of agricultural machinery. The urban–rural gradient around Yenipazar is relatively gradual, with small villages and agricultural fields seamlessly blending into the town’s periphery. While not directly adjacent to major industrial belts, Aydın Province does have some light industrial activity, and transport corridors carrying goods to and from larger urban centers like İzmir can influence air quality. The Meander River itself, though providing irrigation and supporting agriculture, can also contribute to humidity levels, impacting the dispersion of pollutants. The prevailing winds generally flow from the northwest, bringing in air masses from the Aegean Sea, which can help to dilute pollutants, but also introduce marine aerosols.

Yenipazar’s air quality experiences a distinct seasonal rhythm dictated by its Mediterranean climate. Summers (June-August) are typically hot and dry, characterized by high temperatures and minimal rainfall. This leads to stagnant air conditions, particularly during heatwaves, which can trap pollutants close to the ground. The lack of rainfall also means reduced natural cleansing of the atmosphere. Spring (March-May) and Autumn (September-November) offer more favorable conditions, with increased wind speeds and occasional rainfall helping to disperse pollutants. However, agricultural burning, a common practice in the region to clear fields after harvest, can significantly degrade air quality during these transitional periods, especially in late autumn. Winters (December-February) are relatively mild and wet, with occasional fog formation. Fog, while visually striking, can exacerbate air pollution by trapping particulate matter and reducing visibility. Temperature inversions, where a layer of warm air sits above cooler air near the ground, are more frequent during winter nights, further hindering pollutant dispersion. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during periods of agricultural burning and prolonged heatwaves. Outdoor activities are generally best enjoyed during the spring and autumn months, avoiding peak agricultural burning times. While winter temperatures are mild, the potential for fog and inversions warrants awareness and reduced outdoor exertion on particularly still days. Maintaining awareness of regional agricultural practices and weather forecasts is crucial for minimizing exposure to potentially harmful air pollutants.