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Jiamusi occupies a strategic position in northeastern China's Heilongjiang province, situated at the confluence of the Songhua and Amur Rivers where the Sanjiang Plain meets the Lesser Khingan Mountains. This riverine city at 46.8°N latitude lies approximately 80 meters above sea level on the fertile floodplains of the Songhua River basin, creating a distinctive urban character shaped by its dual identity as both an agricultural hub and regional industrial center. Jiamusi serves as the economic gateway to the Sanjiang Plain, one of China's most important grain-producing regions, with vast agricultural fields stretching eastward toward the Russian border. The city's geography creates a unique air quality dynamic: while the surrounding plains allow for some pollutant dispersion, the city's position in a river valley can trap emissions during certain meteorological conditions. Industrial activities cluster along the riverbanks, including food processing plants, machinery manufacturing, and chemical facilities that leverage the region's agricultural output and transportation networks. The urban-rural gradient is pronounced, with dense urban cores transitioning abruptly to expansive farmlands, creating periodic agricultural burning impacts during planting and harvest seasons. Proximity to the Amur River and Songhua River provides some moderating effects but also contributes to winter fog formation that can exacerbate pollution episodes. Jiamusi's location in China's far northeast places it downwind of industrial regions during prevailing westerly winds, while its position near the Russian border means it experiences cross-border pollution influences, particularly from agricultural and industrial activities in the neighboring Khabarovsk Krai region.

Jiamusi's air quality follows a distinct seasonal rhythm shaped by its continental monsoon climate and regional geography. Winter brings the most challenging conditions from November through February, when intense cold creates strong temperature inversions that trap pollutants near the surface. Heating demands surge during these months, with coal-fired district heating systems operating at full capacity, while calm winds and frequent fog episodes further degrade air quality. Sensitive groups should limit outdoor activities during prolonged cold spells when pollution accumulates. Spring offers gradual improvement from March to May as temperatures rise and winds increase, though March can still see poor air quality from lingering heating emissions and occasional dust storms from the Mongolian Plateau. Agricultural burning during spring planting in surrounding farmlands creates short-term pollution spikes. Summer provides the cleanest air from June through August, with frequent rainfall, active convection, and southeasterly monsoon winds dispersing pollutants effectively—this is the ideal season for outdoor activities. Autumn begins cleanly in September but deteriorates through October and November as temperatures drop, heating systems activate, and agricultural burning resumes after harvest. The transition months of October and November see particularly variable conditions as stable atmospheric layers reestablish. Throughout the year, sensitive individuals should monitor daily conditions closely during winter mornings when inversions are strongest and during agricultural burning periods in spring and autumn.