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Hani, a district within the Diyarbakır province of Turkey, occupies a geographically significant position within the Southeastern Anatolia Region. Situated at coordinates 38.4136° N, 40.3925° E, the town rests at an elevation of approximately 1,250 meters (4,100 feet) above sea level, nestled within the foothills of the Taurus Mountains. This elevated terrain plays a crucial role in Hani’s microclimate and, consequently, its air quality. The surrounding landscape is characterized by a mix of agricultural plains and rugged, semi-arid hills, typical of the region. Diyarbakır, a major urban center, lies to the west, representing a gradual urban–rural gradient as one moves eastward towards Hani. The Tigris River, though not directly adjacent, influences regional weather patterns and contributes to the overall humidity levels. Agriculture, particularly wheat and barley cultivation, dominates the surrounding areas, and while generally beneficial, agricultural practices can contribute to particulate matter emissions, especially during harvest seasons. The proximity to Diyarbakır’s industrial belt, though not immediately bordering Hani, means that pollutants can be transported by prevailing winds. Topographically, the valley setting can trap pollutants, particularly during periods of low wind speed and temperature inversions, leading to localized air quality challenges. The town’s relatively small size (population 32,519) means that localized industrial activity within Hani itself is limited, but regional influences are substantial.

Hani’s air quality experiences a distinct seasonal cycle dictated by its climate and regional weather patterns. Summers (June-August) are typically hot and dry, with minimal rainfall and frequent periods of high pressure. This often leads to stagnant air conditions and temperature inversions, where a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing. Agricultural burning, a common practice in the surrounding rural areas to clear fields for planting, significantly contributes to particulate matter pollution during this period. Autumn (September-November) brings a slight improvement as winds increase, but agricultural activities continue, maintaining a moderate pollution level. Winter (December-February) is the most challenging season. Cold temperatures and frequent fog, combined with temperature inversions, exacerbate air quality issues. Residential heating, often reliant on solid fuels like wood and coal, adds to the particulate load. Spring (March-May) generally sees the best air quality, with increased rainfall and stronger winds helping to flush out pollutants. However, dust storms originating from the Mesopotamian plains can occasionally impact Hani, temporarily degrading air quality. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the summer and winter months, limiting outdoor activity during periods of stagnant air or fog. The transition months of spring and autumn offer the most favorable conditions for outdoor pursuits, though vigilance regarding agricultural burning remains important.