Sampués Air Quality Index (AQI)

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Sampués, nestled within the Sucre Department of Colombia, occupies a relatively flat terrain at approximately 9.1833°N, -75.3833°W. The city’s geography is profoundly shaped by its location within the Caribbean coastal region, a landscape dominated by lowlands and the influence of the Sinú River basin. This proximity to the river, while vital for agriculture and water resources, also contributes to humidity levels that can exacerbate pollutant concentrations. Sampués is surrounded by agricultural lands, primarily dedicated to cattle ranching and crop cultivation, which, while economically important, can introduce particulate matter from land use practices and potential burning of agricultural waste. The urban-rural gradient is relatively sharp, with the city centre transitioning quickly to rural landscapes. The prevailing winds, generally from the Caribbean Sea, carry moisture and can also transport pollutants from coastal industrial areas further afield. The flat topography limits natural dispersion of pollutants, increasing the potential for localised air quality issues. The city’s elevation, being close to sea level, further reduces the effectiveness of atmospheric mixing, trapping pollutants near the ground. Understanding these geographical factors is crucial for addressing Sampués’ air quality challenges.

Sampués experiences a bimodal rainfall pattern, defining its ‘seasons’ rather than traditional four-season cycles. The drier periods, typically from December to March and again from July to August, often coincide with increased agricultural activity and potential burning, leading to elevated particulate matter levels. These months are generally less favourable for outdoor activity, particularly for those with respiratory sensitivities. Conversely, the wetter seasons – April to June and September to November – bring increased rainfall that helps to wash pollutants from the air, resulting in improved air quality. However, high humidity during these periods can also foster mould growth, impacting indoor air quality. Temperature inversions, common during the calmer, drier periods, trap pollutants close to the ground, worsening conditions. The Caribbean winds, while generally beneficial for dispersion, can shift and become stagnant during certain periods, exacerbating pollution. Sensitive groups, including children, the elderly, and individuals with asthma, should limit strenuous outdoor activity during the drier months and monitor their health closely. Fog, prevalent during the wetter seasons, can also contribute to reduced visibility and increased particulate matter concentrations.