Sakabansi Air Quality Index (AQI)

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Sakabansi, a municipality within Benin’s Borgou Department, occupies a relatively flat terrain at approximately 10.0442°N, 3.3821°E. Situated inland, the city isn’t directly influenced by coastal breezes, but benefits from its position within the broader Benin Plateau. The surrounding landscape is predominantly savannah, transitioning into woodland as one moves further from the city centre. This agricultural zone, characterised by subsistence farming and increasingly, commercial cultivation of crops like cotton and maize, significantly impacts local air quality. Dust from tilled fields, particularly during the dry season, contributes to particulate matter pollution. Sakabansi’s urban character is one of a growing regional market town, experiencing a gradual urban-rural gradient as it expands outwards. While not heavily industrialised, small-scale processing of agricultural products and local artisanal activities contribute to localised emissions. The lack of significant elevation changes limits atmospheric dispersion, potentially trapping pollutants near ground level. The nearest substantial water body is the Pendjari River, some distance away, offering limited moderating influence on local climate and air circulation. The city’s position within a broader network of smaller settlements means it acts as a transport hub, with increased vehicle traffic adding to emissions.

Sakabansi experiences a distinct tropical climate with a pronounced wet and dry season cycle, heavily influencing air quality. The dry season, typically from November to March, sees a significant increase in particulate matter. Reduced rainfall means dust from agricultural activities and unpaved roads remains suspended for longer, exacerbated by Harmattan winds blowing from the Sahara. This period is generally the least favourable for outdoor activity, particularly for those with respiratory conditions. The transition months of April and May bring increased burning of vegetation to prepare fields for planting, leading to spikes in smoke and associated pollutants. The wet season, from June to October, offers a reprieve, with rainfall effectively washing pollutants from the atmosphere. However, increased humidity can also promote the formation of mould and allergens. August and September, the peak of the rainy season, are generally the best months for outdoor activity. Temperature inversions, though less common than in temperate climates, can occur during the cooler nights of the dry season, trapping pollutants near ground level. Sensitive groups – children, the elderly, and those with pre-existing respiratory illnesses – should limit strenuous outdoor activity during the dry season and periods of agricultural burning.