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San Antonio de las Vueltas, nestled in the province of Villa Clara, Cuba, occupies a geographically significant position within the island’s central region. Located at approximately 22.5162° N, 79.7013° W, the town sits within a gently undulating landscape, characterized by fertile plains and rolling hills typical of the Cuban landscape. The surrounding terrain is predominantly agricultural, with extensive fields dedicated to sugar cane cultivation, a historically dominant industry in the area. This proximity to agricultural zones directly influences the local air quality, particularly during harvest seasons when burning of cane fields is practiced, releasing particulate matter and other pollutants. The town’s elevation is relatively low, contributing to potential temperature inversions, especially during cooler months, which can trap pollutants near the ground. While San Antonio de las Vueltas is not directly adjacent to a major body of water, it benefits from the moderating influence of the nearby Caribbean Sea, which affects regional weather patterns. The urban–rural gradient is gradual; the town itself is a modest settlement, transitioning quickly into the surrounding agricultural lands. There are no major industrial belts immediately bordering San Antonio de las Vueltas, though larger industrial areas are present in nearby provincial capitals. The town’s location within a relatively flat, agricultural region, combined with its subtropical climate, creates a unique set of conditions impacting air quality, making it susceptible to both regional and localized pollution sources.

San Antonio de las Vueltas experiences a tropical climate with distinct wet and dry seasons, significantly influencing its air quality profile. The dry season, typically spanning from November to April, often sees clearer skies and reduced humidity, but can also be punctuated by periods of stagnant air. Temperature inversions are more common during these cooler months, particularly in December and January, trapping pollutants released from agricultural burning and domestic sources closer to the ground. The wet season, from May to October, brings frequent rainfall, which naturally helps to cleanse the atmosphere by removing particulate matter. However, heavy downpours can also lead to increased soil erosion and dust storms, temporarily degrading air quality. The months of May and June, marking the transition from dry to wet, often experience elevated dust levels. Agricultural activities, particularly the sugar cane harvest, are most intense during the dry season (December-February), leading to increased emissions from field burning. This period warrants heightened caution for individuals with respiratory sensitivities. During the wet season, while overall air quality tends to improve, the risk of fungal spores and allergens increases, potentially affecting those with allergies or asthma. Outdoor activities are generally most favorable during the wet season, particularly after rainfall, but vigilance regarding potential allergens remains important. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should limit outdoor exposure during periods of agricultural burning and when air quality is visibly affected by dust or haze.