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Dengtacun, situated in Liaoning Province of northeastern China, occupies a strategic position within the broader Northeast China Plain, approximately 50 kilometers northeast of Shenyang, the provincial capital. This urban area lies at coordinates 41.4333°N, 123.3333°E, with an elevation averaging around 50 meters above sea level, placing it within the relatively flat terrain characteristic of the Liaohe River Basin. The city's geography is defined by its proximity to the Hun River, a major tributary of the Liaohe River, which flows southward through the region, creating a corridor that historically facilitated transportation and settlement. Dengtacun's location within the Shenyang Metropolitan Area positions it within one of China's key industrial belts, specifically the Central Liaoning Urban Agglomeration, known for heavy manufacturing, metallurgy, and chemical production. The surrounding landscape transitions from dense urban development in its core to mixed agricultural zones in peripheral areas, where croplands dominate, producing corn, soybeans, and rice. This urban-rural gradient contributes to air quality challenges, as industrial emissions from nearby facilities in cities like Shenyang and Fushun interact with agricultural burning residues and urban traffic pollution. The region's topography, characterized by low-lying plains bordered by the Changbai Mountains to the east, can trap pollutants under certain meteorological conditions, exacerbating air stagnation. Proximity to the Bohai Sea, approximately 200 kilometers to the southwest, influences local climate patterns but offers limited cleansing effects due to the distance and prevailing wind directions. Overall, Dengtacun's air quality is shaped by its industrial legacy, agricultural surroundings, and geographic setting within a basin that can hinder pollutant dispersion.

In Dengtacun, air quality follows a distinct seasonal pattern influenced by the temperate continental monsoon climate of northeastern China. During winter, from December to February, pollution levels typically peak due to a combination of factors: increased coal burning for heating, frequent temperature inversions that trap pollutants near the surface, and reduced wind speeds. Cold, stagnant air masses settle over the Liaohe Basin, leading to persistent haze and fog, making these months particularly challenging for outdoor activities, especially for sensitive groups like children, the elderly, and those with respiratory conditions. Spring, from March to May, sees gradual improvement as temperatures rise and winds strengthen, dispersing pollutants, though occasional dust storms from the Gobi Desert can temporarily degrade air quality. Summer, from June to August, offers the cleanest air, with monsoon rains from the southeast helping to wash out particulate matter, and higher temperatures promoting vertical mixing; this season is ideal for outdoor pursuits, though humidity can sometimes lead to ozone formation. Autumn, from September to November, experiences a resurgence in pollution as heating demands increase and agricultural burning occurs after harvests, coupled with more stable atmospheric conditions. Sensitive individuals should monitor air quality forecasts closely in late autumn and winter, consider using air purifiers indoors, and limit prolonged exposure during peak pollution episodes. Overall, planning visits or outdoor activities in summer or early autumn is advisable to minimize health risks.