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Pointe à Raquettes, nestled within the Ouest department of Haiti (coordinates 18.7847° N, 73.0617° W), occupies a geographically significant position along Haiti’s southern coast. The city’s terrain is characterized by a gently sloping coastal plain, transitioning rapidly to the rugged hills and mountains of the Massif de la Hotte to the southwest. This proximity to the mountains creates a localized rain shadow effect, influencing precipitation patterns and potentially trapping pollutants under certain meteorological conditions. Pointe à Raquettes sits near the coast, benefiting from the moderating influence of the Caribbean Sea, though this also exposes it to maritime influences like salt spray and potential coastal breezes carrying pollutants from elsewhere. The surrounding landscape is a mix of small-scale agriculture – primarily subsistence farming of crops like maize, beans, and plantains – and scattered rural settlements. The urban–rural gradient is relatively sharp; the city itself is a modest settlement, with agricultural land dominating the immediate periphery. There are no major industrial belts directly adjacent to Pointe à Raquettes, however, the larger urban center of Les Cayes, with its associated port activity and limited industrial presence, lies within a reasonable distance, potentially contributing to regional air quality concerns. The elevation is relatively low, generally below 100 meters above sea level, which can exacerbate the effects of temperature inversions, particularly during drier periods. The coastal location and surrounding topography combine to create a complex microclimate that significantly impacts local air quality dynamics.

Pointe à Raquettes experiences a tropical climate with distinct wet and dry seasons, profoundly influencing its air quality profile. The wet season, typically spanning from April to October, brings frequent rainfall and increased humidity. While rainfall naturally helps to cleanse the atmosphere by removing particulate matter, the increased humidity can contribute to the formation of secondary pollutants. The dry season, from November to March, is characterized by lower rainfall, higher temperatures, and a greater propensity for temperature inversions, particularly during the early morning hours. These inversions trap pollutants near the ground, leading to periods of stagnant air and potentially elevated concentrations of particulate matter and other airborne contaminants. Wind patterns are generally light and variable, but during certain periods, sea breezes can provide some ventilation, dispersing pollutants. The months of January and February often experience the most persistent temperature inversions, making them periods to exercise caution, especially for individuals with respiratory sensitivities. During the wet season, while overall pollution may be diluted, the increased humidity can exacerbate respiratory conditions for some. Sensitive groups, including children, the elderly, and those with pre-existing respiratory illnesses, should monitor local conditions and limit outdoor exertion during periods of stagnant air, regardless of the season. Agricultural burning, a common practice in the surrounding rural areas, can also contribute to air pollution episodes, particularly during the transition periods between seasons.