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Jamālpur occupies a strategic position within the Mymensingh Division of northern Bangladesh, characterized by its placement along the fertile banks of the mighty Jamuna River. This low-lying alluvial landscape is defined by vast, flat plains that facilitate intense agricultural productivity, primarily focusing on rice and jute cultivation. The urban character of Jamālpur is a hybrid of a bustling administrative hub and a rural market town, where the urban-rural gradient is blurred by sprawling settlements and fragmented farmland. Geographically, the city sits at a low elevation, making it susceptible to the atmospheric stagnation common in the Bengal Basin. The surrounding landscape is a mosaic of wetlands and paddy fields, which influence local humidity and temperature. However, the proximity to the Jamuna River serves as a double-edged sword; while the river breeze can disperse pollutants, the riverbanks are often sites for intensive brick kiln operations, which are significant sources of particulate matter. These industrial belts, combined with the dusty unpaved arterial roads, create a localized pollution profile. The city's position in the northern interior means it is less influenced by coastal saline breezes and more by continental air masses moving across the Gangetic plain. Consequently, the intersection of agricultural biomass burning and emerging industrialization creates a complex air quality dynamic, where pollutants often linger over the flat terrain during periods of atmospheric stability, impacting the overall respiratory health of the growing local population.

The air quality in Jamālpur follows a distinct seasonal rhythm dictated by the tropical monsoon climate. During the winter months, from November to February, the city experiences its most challenging air conditions. Cool, dense air leads to temperature inversions, trapping particulate matter and smoke from domestic biomass heating and brick kilns close to the ground. Dense winter fog often exacerbates this, creating a thick smog that reduces visibility and spikes respiratory distress. This is the period when sensitive groups, including children and the elderly, should minimize outdoor activity and use protective masks. Transitioning into spring, the air becomes drier and dustier, with wind-blown silt from the Jamuna riverbeds contributing to elevated particulate levels. The summer months bring intense heat and humidity, which can accelerate the formation of ground-level ozone, though the air remains relatively clearer than in winter. The arrival of the southwest monsoon from June to September provides a critical atmospheric cleansing. Heavy rainfall effectively washes pollutants from the sky, leading to the lowest pollution levels of the year, making this the most favorable time for outdoor exertion. However, the post-monsoon period in October and November sees a return of agricultural burning as farmers clear crop residues, reintroducing smoke into the basin. This cyclical pattern necessitates a health strategy that emphasizes indoor confinement during the stagnant winter months and leverages the rainy season for respiratory recovery, ensuring the community manages the seasonal volatility of the atmosphere.