Ténenkou Air Quality Index (AQI)

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Ténenkou, nestled within the Mopti Region of Mali, occupies a strategically vital position on the Niger River, approximately 60 kilometers southeast of Mopti city. Its coordinates, 14.4556° N, -4.9181° W, place it within the inland delta region, a landscape characterized by a complex interplay of fluvial and alluvial plains. The terrain is predominantly flat, rarely exceeding 200 meters above sea level, contributing to a relatively uniform air circulation pattern. The Niger River itself is the defining geographical feature, influencing local climate and acting as a transport corridor. Surrounding Ténenkou is a mosaic of agricultural land – primarily rice paddies and sorghum fields – vital to the region’s food security, and interspersed with sparse savanna vegetation. This agricultural activity, particularly during peak planting and harvesting seasons, introduces localized sources of particulate matter. The urban–rural gradient is gradual, with small villages and agricultural plots blending seamlessly into the town’s periphery. There's a limited industrial presence; however, the river supports small-scale fishing and boat building, which can contribute to localized emissions. The flat topography and proximity to the Niger River can exacerbate air pollution episodes, as stagnant air and humidity can trap pollutants. The prevailing winds, generally from the north during the dry season, can carry dust and sand from the Sahel region, impacting air quality. The surrounding landscape, while largely natural, is increasingly influenced by human activity, creating a dynamic environment for air quality considerations.

Ténenkou’s air quality experiences a distinct seasonal cycle dictated by the region’s tropical savanna climate. The dry season, roughly from November to April, is characterized by lower humidity and increased wind speeds, initially offering some respite from stagnant air. However, this period also sees a surge in dust intrusions from the Sahara and Sahel, significantly impacting visibility and respiratory health. March and April often witness peak dust events, driven by Harmattan winds. The onset of the rainy season (May to October) brings a relative improvement in air quality as rainfall washes away particulate matter and increased humidity traps some pollutants. However, the agricultural activities associated with the rainy season – land clearing by burning, fertilizer application, and increased vehicle traffic on unpaved roads – introduce new sources of pollution. The months of July and August, coinciding with the peak of the rainy season, can experience periods of dense fog, particularly near the Niger River, which can trap pollutants close to the ground. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the dry season, limiting outdoor activities during peak dust events. During the rainy season, while overall air quality may improve, vigilance is still required due to agricultural emissions and potential for localized pollution hotspots. The transition months of May and November are particularly unpredictable, with fluctuating wind patterns and rainfall, requiring adaptable health precautions.