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Maga, situated in Cameroon’s Extrême-Nord region, occupies a geographically significant position within the Chad Basin lowlands. Located at approximately 10.85°N, 14.93°E, the city’s terrain is predominantly flat, characteristic of the Sahelian zone, with gentle slopes leading towards the Logone River, which forms a natural border with Chad. This riverine proximity introduces a unique element to Maga’s environment, influencing humidity levels and potentially trapping pollutants under certain meteorological conditions. The surrounding landscape is a mosaic of savanna grasslands, sparsely wooded areas, and agricultural fields, primarily dedicated to millet, sorghum, and maize cultivation – a crucial factor in understanding potential dust and agricultural emissions. Maga’s urban character is that of a rapidly developing market town, serving as a vital trading hub for the region, with a gradual urban–rural gradient extending outwards, transitioning from concentrated settlements to dispersed villages and agricultural plots. The city’s elevation is relatively low, around 220 meters above sea level, which can exacerbate the effects of temperature inversions, particularly during the cooler months. While Maga isn't directly adjacent to major industrial belts, its role as a commercial center means increased vehicular traffic and potential emissions from small-scale workshops and markets. The prevailing winds, often originating from the northeast during the dry season, can transport dust and pollutants from across the Sahel, impacting air quality.

Maga’s air quality experiences a distinct seasonal cycle dictated by its tropical savanna climate. The dry season, roughly from November to April, presents the most significant air quality challenges. Characterized by minimal rainfall and persistent northeast trade winds, this period is prone to intense dust storms originating from the Sahara and the Bodélé Depression, a major source of Saharan dust. These winds carry fine particulate matter, significantly reducing visibility and impacting respiratory health. Temperature inversions are also more frequent during the cooler dry season nights, trapping pollutants closer to the ground. The wet season, from May to October, brings relief as rainfall washes away accumulated dust and dilutes pollutants. However, agricultural activities during this period, including burning of crop residues, can contribute to localized smoke and particulate matter. Fog, particularly in the early mornings, can also temporarily worsen air quality by trapping pollutants. The months of February and March often experience the highest dust concentrations, making them less favorable for outdoor activities, especially for children, the elderly, and individuals with pre-existing respiratory conditions. During the wet season, short periods of smoke from agricultural burning should be avoided. Maintaining indoor air quality through ventilation and air purifiers is advisable during peak dust periods. Protective measures like wearing masks during dust storms and limiting strenuous outdoor activity are recommended for vulnerable populations throughout the year.