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Mabéhiri, nestled within the Bas-Sassandra region of Ivory Coast at coordinates 5.6667°N, -6.4167°W, is a relatively small urban centre of approximately 17,909 inhabitants. The city’s geography is defined by its location in a humid tropical climate, characterized by a relatively flat terrain typical of the coastal plains. Mabéhiri is situated inland, approximately 20km from the Atlantic coastline, influencing its humidity levels and temperature regulation. The surrounding landscape is predominantly agricultural, dominated by cocoa, coffee, and rubber plantations – key economic drivers for the region. This agricultural activity, while vital, contributes to potential air quality concerns through the use of fertilizers and pesticides, and seasonal burning of vegetation. The urban-rural gradient is quite sharp, with a rapid transition from denser settlement to agricultural land. The Sassandra River, a significant waterway, flows nearby, impacting local microclimates and potentially influencing pollutant dispersion. While Mabéhiri isn’t a major industrial hub, smaller-scale processing of agricultural products occurs, adding to localized emissions. The city’s elevation is low, increasing its susceptibility to humidity and potentially trapping pollutants during periods of atmospheric stability. Understanding these geographical factors is crucial for assessing and mitigating air quality challenges in Mabéhiri.

Mabéhiri experiences a distinct wet and dry season, profoundly impacting its air quality. The dry season, typically from November to March, sees a concentration of particulate matter due to increased dust from unpaved roads and agricultural activities. Harmattan winds, blowing from the Sahara, can exacerbate this, carrying fine dust particles across the region. This period often presents the poorest air quality, with increased respiratory irritation. Conversely, the wet season, spanning April to October, generally improves air quality as rainfall effectively washes away pollutants. However, increased humidity can also foster mold growth, impacting indoor air quality. The heaviest rainfall occurs between June and August, offering the cleanest air. Temperature inversions, though less frequent than in temperate climates, can occur during the transition periods, trapping pollutants near ground level. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit strenuous outdoor activity during the dry season, particularly December to February. Monitoring local weather patterns and avoiding peak agricultural burning times are also advisable. The consistent humidity throughout the year requires attention to indoor ventilation to prevent mold and mildew.