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Lubumbashi, the second-largest city in the Democratic Republic of the Congo, is situated in the southeastern Katanga Province, not Kinshasa as incorrectly stated—Kinshasa is the capital located over 1,500 kilometres northwest. Nestled at an elevation of approximately 1,280 metres on the Katanga Plateau, Lubumbashi lies within the Copperbelt region, a mineral-rich zone extending into Zambia. The city's urban character is defined by its role as the mining and metallurgical hub of the DRC, with sprawling industrial areas dedicated to copper and cobalt extraction and processing. Surrounding landscapes include savannah grasslands and scattered woodlands, with the Lubumbashi River flowing through the city, though it is relatively small and does not significantly mitigate air pollution. The terrain is generally flat to gently rolling, which can trap pollutants under certain meteorological conditions. Proximity to major mining operations, such as those in nearby Kolwezi and Likasi, creates an industrial belt that exacerbates local air quality issues. The urban–rural gradient shows dense, informal settlements near industrial sites, where domestic biomass cooking and waste burning are prevalent, blending urban emissions with peri-urban pollution sources. This geographic positioning in a subtropical zone, combined with high-altitude effects, influences atmospheric stability, often leading to pollutant accumulation, particularly during the dry season when rainfall is minimal and winds are calm.

In Lubumbashi's humid subtropical climate, air quality follows a distinct seasonal pattern driven by meteorological factors and human activities. The dry season, from May to August, marks the peak pollution period, with May, June, July, and August experiencing the highest pollutant concentrations. During these months, minimal rainfall and prevalent temperature inversions trap emissions from mining, smelting, vehicle exhaust, and domestic sources near the ground, exacerbated by calm winds that fail to disperse pollutants. Sensitive groups, such as children, the elderly, and those with respiratory conditions, should avoid prolonged outdoor activities in this period, especially during early mornings and evenings when inversions are strongest. The wet season, from November to March, brings relief as frequent rains scrub pollutants from the air, though occasional heavy downpours can stir up road dust temporarily. September and October serve as transitional months, with improving air quality as rains begin, making them favourable for outdoor activities. Seasonal variations include occasional fog during cooler dry-season nights, which can combine with pollution to reduce visibility and increase health risks. Year-round, generator exhaust and waste burning contribute to baseline pollution, but their impact is magnified in the dry season. Health guidance recommends using air purifiers indoors during peak months and monitoring local air quality reports, though specific AQI data is often limited in this region.