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Bengonbeyene, nestled within the Wele-Nzas province of Equatorial Guinea, occupies a geographically significant position on the mainland coast, approximately 25 kilometers north of the nation’s capital, Malabo. Its coordinates (1.6931, 11.0342) place it within a humid tropical environment characterized by dense rainforest and a relatively low elevation, rarely exceeding 100 meters above sea level. The city’s immediate surroundings are dominated by the lush, undulating terrain of the coastal rainforest, a landscape that typically acts as a natural filter for airborne pollutants. However, Bengonbeyene’s proximity to Malabo introduces complexities. The urban–rural gradient shifts rapidly, with agricultural zones, primarily focused on cocoa and coffee cultivation, extending outwards from the city limits. These agricultural practices, while vital to the local economy, can contribute to localized emissions, particularly during harvesting and processing periods. The Atlantic Ocean lies just a short distance to the west, influencing local weather patterns and potentially dispersing coastal pollutants. The region’s geology, composed largely of volcanic rock, can also impact soil composition and influence the release of certain particulate matter. While Bengonbeyene itself lacks major industrial belts, its connection to Malabo’s infrastructure and potential for future development necessitate careful consideration of air quality management, especially concerning vehicular traffic and any emerging industrial activities. The dense vegetation, while beneficial, can also trap pollutants under certain meteorological conditions, creating localized air quality challenges.

Bengonbeyene experiences a classic tropical climate with distinct wet and dry seasons, profoundly impacting its air quality profile. The wet season, typically spanning from October to May, brings consistent rainfall and high humidity. This abundant precipitation naturally scavenges the atmosphere, effectively washing away particulate matter and reducing overall pollution levels. Winds are generally lighter during this period, which can sometimes lead to a temporary build-up of pollutants in localized areas, particularly near agricultural zones where burning practices might occur. The dry season, from June to September, is characterized by reduced rainfall and increased sunshine. While this might seem beneficial, it often coincides with a slight increase in dust and particulate matter due to drier soil conditions and potentially increased agricultural activity. Temperature inversions, though less frequent than in temperate climates, can occasionally occur during the dry season, trapping pollutants closer to the ground, especially during calmer nights. Fog, a relatively rare occurrence, can also exacerbate air quality issues by limiting atmospheric mixing. Sensitive groups, such as children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of stagnant air. Outdoor activities are generally more favorable during the wet season, although heavy rainfall can still impact visibility and air quality. The interplay of these seasonal factors dictates a dynamic air quality landscape, requiring ongoing monitoring and adaptive management strategies to protect public health.