Agamé Air Quality Index (AQI)

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Agamé, nestled within the Couffo Prefecture of Benin, occupies a geographically significant position in the country’s north-western region. Located at approximately 6.7333° latitude and 1.7667° longitude, the city’s terrain is characterized by gently undulating hills and valleys, typical of the derived savanna woodland that dominates the area. The elevation, while modest, contributes to localized microclimates and influences air circulation patterns. Agamé sits within a transitional zone between the drier Sahelian region to the north and the more humid forest areas further south, impacting vegetation cover and potential sources of biomass burning. The surrounding landscape is primarily agricultural, with small-scale farming prevalent – cocoa, coffee, and plantains are common crops. This agricultural activity, particularly during harvest and land clearing periods, represents a key potential contributor to localized air pollution. The urban–rural gradient around Agamé is relatively gradual, with small villages and agricultural plots interspersed throughout the wider region. While Agamé itself is a small town, its proximity to larger regional hubs and transportation routes means it is susceptible to pollutants transported from elsewhere. The lack of major industrial zones directly within Agamé mitigates some pollution risks, but the reliance on wood for cooking and heating, a common practice in the region, introduces particulate matter into the atmosphere. The relatively open terrain allows for some dispersion of pollutants, but stagnant air conditions, particularly during certain times of the year, can lead to localized build-ups.

Agamé experiences a tropical savanna climate, defined by distinct wet and dry seasons rather than the four traditional seasons. The dry season, typically spanning from November to March, presents the most significant air quality challenges. Reduced rainfall leads to drier vegetation, increasing the risk of wildfires and agricultural burning for land preparation. These practices release substantial quantities of particulate matter (PM2.5 and PM10) and carbon monoxide, significantly impacting local air quality. Temperature inversions, common during the cooler, drier nights, trap pollutants close to the ground, exacerbating the problem. The harmattan winds, originating from the Sahara, can also transport dust and sand into the region, further degrading air quality. The wet season, from April to October, generally brings improved air quality due to increased rainfall, which washes pollutants from the atmosphere and reduces the frequency of burning. However, periods of heavy rainfall can also lead to flooding, which can release mould spores and other allergens into the air. Fog, particularly during the transition periods between seasons, can also trap pollutants, creating temporary pockets of poor air quality. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, limiting outdoor activities during peak burning periods and avoiding areas with visible smoke. Maintaining indoor air quality through proper ventilation and avoiding the use of biomass fuels indoors is also crucial. The months of January and February often experience the poorest air quality due to a combination of dry conditions, agricultural burning, and temperature inversions.