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Yahşihan, located in Kırıkkale Province, Turkey, occupies a strategically important position within the Central Anatolian region. Situated at approximately 39.85°N, 33.45°E, the city’s geography is dominated by a gently undulating plateau, characteristic of the broader Anatolian landscape. The elevation averages around 830 meters (2,723 feet) above sea level, contributing to a continental climate and influencing atmospheric stability. Yahşihan’s terrain is primarily agricultural, with vast stretches of cultivated land surrounding the urban area. This includes significant wheat and barley production, alongside livestock farming, which can contribute to localized air quality concerns, particularly from agricultural practices like fertilizer application and animal waste management. The surrounding landscape is a mix of open fields, scattered villages, and low hills, offering limited topographical shielding from prevailing winds. While Yahşihan lacks immediate proximity to major bodies of water, the Kızılırmak River, Turkey’s longest river, flows approximately 50 kilometers to the north, potentially influencing regional weather patterns and humidity levels. The urban–rural gradient is relatively sharp; the city transitions quickly from built-up areas to agricultural fields. Yahşihan’s location along key transportation routes, connecting Ankara to the east and other central Anatolian cities, means it experiences moderate traffic volume. This, combined with the agricultural activity and the plateau’s inherent meteorological conditions, shapes the city’s air quality profile, making it susceptible to particulate matter and other pollutants.

Yahşihan’s air quality follows a distinct seasonal pattern dictated by its continental climate. Summers (June-August) are typically hot and dry, with frequent periods of calm winds and temperature inversions. These inversions trap pollutants near the ground, leading to potential increases in particulate matter and ozone, especially during periods of agricultural burning or increased traffic. The dry conditions exacerbate dust generation from agricultural fields, further degrading air quality. Spring (March-May) and Autumn (September-November) generally offer improved air quality due to increased wind speeds and rainfall, which help disperse pollutants. However, spring can see elevated pollen levels, impacting respiratory health. Winter (December-February) presents a different set of challenges. Cold temperatures and frequent fog events can lead to stagnant air conditions, trapping pollutants and reducing visibility. Heating systems, particularly those using solid fuels, contribute to localized emissions. The agricultural cycle also plays a role; the harvest season in autumn and the preparation for planting in spring can generate dust and emissions. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during periods of stagnant air, particularly in the summer and winter months. Avoiding strenuous activity during peak pollution episodes is also advisable. Public health advisories regarding agricultural burning should be heeded, and residents are encouraged to use cleaner heating alternatives where possible.