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Vicente Noble, nestled within the Enriquillo province of the Dominican Republic, occupies a geographically significant position within the southwestern region of the island. Located at approximately 18.38° N, 71.18° W, the city’s terrain is characterized by a gently undulating landscape transitioning from coastal plains towards the foothills of the Sierra de Bahoruco mountain range. This proximity to both the Caribbean Sea and the mountains creates a complex interplay of environmental factors influencing air quality. The Enriquillo basin, a large depression containing Lake Enriquillo – the largest lake in the Dominican Republic – lies to the west, impacting regional weather patterns and potentially contributing to stagnant air conditions. The surrounding landscape is a mosaic of agricultural lands, primarily sugarcane and livestock farming, interspersed with pockets of dry forest. This agricultural activity, particularly sugarcane burning during harvest seasons, represents a key source of particulate matter. The urban–rural gradient around Vicente Noble is relatively gradual, with smaller agricultural communities blending into the city’s periphery. The city itself exhibits a typical developing urban character, with a mix of residential areas, small commercial establishments, and limited industrial activity, primarily related to agricultural processing. The prevailing easterly trade winds, while generally dispersing pollutants, can occasionally stall, leading to localized air quality degradation, especially during periods of atmospheric stability. Elevation plays a minor role, with the city situated at a relatively low altitude, minimizing the effects of altitude-related air purification.

Vicente Noble’s tropical climate dictates a distinct wet and dry season pattern, profoundly influencing its air quality. The dry season, typically spanning from December to April, often sees a build-up of pollutants due to reduced rainfall and decreased wind speeds. This period is particularly concerning as agricultural burning, a common practice for land clearing and sugarcane preparation, intensifies, releasing significant amounts of particulate matter and volatile organic compounds into the atmosphere. Temperature inversions, where cooler air becomes trapped beneath a layer of warmer air, are more frequent during the dry season, further hindering pollutant dispersion and exacerbating local air quality issues. The wet season, from May to November, brings increased rainfall and stronger trade winds, naturally cleansing the air and dispersing pollutants. However, heavy rainfall can also lead to increased humidity, which can trap certain pollutants closer to the ground. Fog, though infrequent, can occur during the transition months, further reducing visibility and concentrating pollutants. Outdoor activities are generally more favorable during the wet season, particularly from June to August, when rainfall is consistent and wind speeds are higher. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, limiting prolonged outdoor exposure and avoiding areas with visible smoke. Agricultural workers are particularly vulnerable and should utilize respiratory protection when burning is occurring. The interplay of these meteorological factors creates a dynamic air quality profile throughout the year, demanding adaptive strategies for public health protection.