Diabali Air Quality Index (AQI)

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Diabali, situated in the Ségou Region of Mali, lies at approximately 14.6936°N latitude and 6.0169°W longitude. The city is embedded within the Inland Niger Delta, a vast floodplain of the Niger River, characterized by a relatively flat terrain. Elevation is low, generally below 200 meters, contributing to limited atmospheric dispersion of pollutants. Diabali’s urban character is typical of many Malian settlements – a blend of traditional mud-brick architecture and increasingly modern construction. The surrounding landscape is dominated by savanna woodland and agricultural lands, primarily focused on rain-fed agriculture and pastoral activities. The Niger River, a crucial lifeline, flows nearby, influencing local humidity and potentially contributing to localized fog formation. While Diabali isn’t a major industrial hub, the increasing use of small-scale industries, such as grain milling and brick making, alongside domestic fuel burning (wood and charcoal), contribute to particulate matter emissions. The urban-rural gradient is pronounced; as one moves away from the city center, air quality generally improves due to reduced human activity. Dust from agricultural practices and seasonal bush fires further impacts the regional air quality, particularly during the dry season. The city’s location within a broad river valley can also trap pollutants under stable atmospheric conditions.

Diabali 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 low humidity. This period sees a peak in particulate matter pollution due to increased dust from agricultural activities, bush fires (often used for land clearing), and the widespread burning of wood and charcoal for cooking and heating. Harmattan winds, originating from the Sahara, exacerbate dust levels, reducing visibility and impacting respiratory health. January to March are particularly challenging months. The wet season, from June to October, brings relief from dust, as rainfall effectively suppresses airborne particles. However, increased humidity can promote mold growth indoors, impacting indoor air quality. While overall particulate matter decreases, localized pollution from stagnant water and increased biomass burning for agricultural residue disposal can occur. September and October, towards the end of the rainy season, can see a resurgence of humidity-related issues. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exposure during peak dry season months and ensure good ventilation during the wet season. Monitoring wind direction is crucial, as winds carrying dust plumes should be avoided.