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Chililabombwe, nestled within Zambia’s Copperbelt Province, is a city intrinsically linked to its geological foundations. Located at -12.3667 latitude and 27.8278 longitude, the city sits on a high plateau averaging around 1,300 meters above sea level. This elevation moderates temperatures but also contributes to the potential for temperature inversions, trapping pollutants. The surrounding landscape is characterised by the undulating terrain of the Katanga Plateau, a region rich in copper deposits, which directly shaped Chililabombwe’s development as a mining hub. The city isn’t proximate to major bodies of water; rivers are seasonal and smaller in scale, offering limited dispersion of airborne particles. Chililabombwe is firmly embedded within a significant industrial belt, dominated by copper mining and processing operations. This concentration of heavy industry is the primary driver of air quality concerns. The urban-rural gradient is relatively sharp; the city quickly transitions to agricultural land used for subsistence farming, though even these areas can be impacted by dust from mining activities. The prevailing winds, influenced by the plateau’s topography, often channel pollutants within the urban area, exacerbating localised air quality issues. The city’s growth has largely followed the geological formations, concentrating population and industry in areas prone to pollutant accumulation.

Chililabombwe experiences a distinct wet and dry season, heavily influencing its air quality. The dry season, typically from May to October, sees a significant deterioration in air quality. Reduced rainfall means less atmospheric cleansing, and drier conditions lead to increased dust resuspension from mining operations, unpaved roads, and agricultural lands. October often represents the peak of particulate matter pollution. Temperature inversions are more frequent during the cooler nights of the dry season, trapping pollutants near ground level. The wet season, from November to April, brings relief, with rainfall washing away accumulated pollutants. However, even during the wet season, mining activities continue, contributing to ongoing emissions. January and February, with the heaviest rainfall, generally offer the best air quality. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exposure during the dry season, particularly in October. During the wet season, while overall air quality improves, runoff from mine tailings can introduce heavy metals into the environment, posing a different set of health risks. Monitoring wind direction is crucial; winds from the direction of mining operations will carry higher concentrations of pollutants.