Lessogou Air Quality Index (AQI)

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Lessogou, a town in the Mopti Region of Mali, sits at approximately 13.8118°N latitude and -3.6026°E longitude, placing it firmly within the Sahelian zone. The town’s elevation is relatively low, contributing to limited atmospheric dispersion of pollutants. Lessogou is situated near the Niger River’s Inland Delta, a vast floodplain that dominates the regional landscape. This proximity influences local humidity and can create conditions conducive to dust suspension, particularly during the dry season. The surrounding terrain is predominantly flat savanna, transitioning to more arid landscapes further north. While Lessogou isn’t characterized by heavy industry, the regional economy relies heavily on agriculture and livestock rearing. Agricultural practices, including seasonal burning of crop residue, are a significant source of particulate matter. The urban-rural gradient is pronounced; Lessogou serves as a market town for surrounding villages, leading to increased traffic and localized emissions. Dust from unpaved roads and open areas contributes substantially to baseline particulate levels. The town’s location within a broad river valley can also trap pollutants during periods of atmospheric stability, exacerbating air quality concerns. The interplay of these geographical factors creates a unique air quality profile for Lessogou.

Lessogou experiences a distinct wet and dry season, profoundly impacting air quality. The dry season, roughly from November to May, is characterized by consistently high levels of particulate matter. Harmattan winds, originating from the Sahara Desert, carry vast quantities of dust southward, significantly degrading air quality. January and February are typically the worst months for dust exposure. Temperatures are lower during this period, and temperature inversions can trap pollutants near the ground. The onset of the wet season in June brings a temporary improvement as rainfall washes away dust and suppresses its resuspension. However, increased humidity can also promote mold growth, potentially affecting respiratory health. July to September sees the highest rainfall, offering the cleanest air, though localized flooding can create stagnant water sources breeding mosquitoes. As the dry season returns in October, agricultural burning increases dramatically, releasing smoke and particulate matter. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during peak burning periods and the height of the Harmattan. Wearing masks can offer some protection. Monitoring wind direction is crucial; winds from the north and northeast indicate increased dust levels.