Loading air quality context...

Ségou, Mali, situated at approximately 13.3004°N, -4.9000°W, occupies a crucial position within the Inland Niger Delta, a flat, seasonally flooded plain. The city’s terrain is predominantly flat, lying at an elevation of around 200-250 meters above sea level. This low-lying geography, coupled with its location on the banks of the Niger River, significantly influences local air quality. The surrounding landscape is characterized by floodplains, *dembos* (seasonal wetlands), and agricultural lands, primarily dedicated to rice cultivation and market gardening. Ségou serves as a vital trading hub connecting northern and southern Mali, resulting in increased traffic and associated emissions. The urban-rural gradient is relatively sharp; the city centre is densely populated, transitioning quickly to agricultural areas. Dust from the Sahara Desert frequently impacts the region, particularly during the dry season. The Niger River, while a source of life, can also contribute to humidity and potential mold spore dispersal, impacting respiratory health. Limited industrial activity is present within Ségou itself, but regional transport and processing of agricultural products contribute to localised pollution. The flat terrain inhibits natural dispersion of pollutants, exacerbating air quality issues during periods of calm weather.

Ségou experiences a distinct wet and dry season, heavily influencing air quality. The dry season, roughly November to May, is characterized by consistently high temperatures and the prevalence of Harmattan winds carrying significant amounts of Saharan dust. This dust dramatically increases particulate matter concentrations, leading to reduced visibility and respiratory irritation. January to March are typically the months with the poorest air quality. The transition to the wet season, June to August, brings relief as rainfall washes away dust and suppresses particulate matter. However, increased humidity can promote mold growth, potentially affecting sensitive individuals. September and October see a slight deterioration as the dry season approaches, but the air remains cleaner than the peak dry months. Temperature inversions, common during the cooler nights of the dry season, trap pollutants near the ground, worsening conditions. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit outdoor activity during the dry season, particularly on windy days. Wearing masks can offer some protection. The wet season offers a window for improved outdoor activity, but awareness of mold-related issues is crucial.