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Dabiya, nestled within the Kayes Region of Mali (coordinates 12.6686, -11.1389), occupies a geographically significant position on the edge of the Sahel, a transitional zone between the Sahara Desert and the Sudanian Savanna. The town’s location dictates a semi-arid climate and profoundly influences its air quality dynamics. Situated at an elevation of approximately 280 meters (919 feet), Dabiya experiences a relatively flat terrain, characteristic of the surrounding landscape dominated by gently rolling plains and sparse vegetation. The Niger River, though not immediately adjacent, exerts a regional influence, impacting humidity levels and potentially affecting atmospheric stability. The surrounding landscape is primarily agricultural, with extensive fields dedicated to millet, sorghum, and maize cultivation, interspersed with acacia woodlands and grasslands. This agricultural activity, particularly during planting and harvesting seasons, contributes to particulate matter in the air. The urban–rural gradient around Dabiya is gradual, with small villages and agricultural plots blending seamlessly into the town’s periphery. There are no major industrial belts directly impacting Dabiya; however, regional trade routes pass through, potentially introducing pollutants from vehicles. The prevailing winds, often originating from the Sahara, carry dust and sand, a consistent factor in Dabiya’s air quality profile. The town’s relatively small size (population 10,832) means that local emissions from residential wood burning and limited motorized transport are the primary contributors to localized air pollution, though regional dust events dominate the overall picture.

Dabiya’s air quality follows a distinct seasonal pattern dictated by its semi-arid climate and the interplay of meteorological factors. The dry season, spanning roughly from November to May, is characterized by consistently low humidity and frequent dust intrusions from the Sahara. Wind speeds increase during this period, often carrying significant quantities of fine particulate matter, leading to periods of reduced visibility and potential respiratory irritation. Temperature inversions, common during the cooler nights of December and January, can trap pollutants near the ground, exacerbating local air quality issues. The harmattan wind, a dry, dusty trade wind, is particularly impactful during January and February, significantly degrading air quality. The wet season, from June to October, brings a temporary respite. Rainfall washes away accumulated dust and particulate matter, and increased humidity helps to settle airborne particles. However, agricultural activities intensify during this period, with burning of crop residues contributing to localized smoke pollution. The months of July and August, coinciding with the peak of the rainy season, generally offer the best air quality. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of intense dust storms. Outdoor activities are best avoided during these times. Even during the wet season, smoke from agricultural burning can pose a localized health risk. Maintaining indoor air quality through proper ventilation and air filtration is advisable throughout the year, with particular emphasis during the dry season’s dust events.