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Nagarote, nestled within the department of León, Nicaragua, occupies a geographically significant position in the country’s northwest, approximately 15 kilometers northeast of León city. Its coordinates, 12.2667° N, -86.5667° W, place it within the broader Central Highlands region, characterized by rolling hills and volcanic terrain. The city sits at an elevation of roughly 350 meters above sea level, influencing local climate patterns and air circulation. Nagarote’s landscape is a blend of urban development and agricultural land, reflecting its role as a market town and agricultural hub. Surrounding Nagarote are extensive fields dedicated to sugarcane cultivation, a dominant feature of the regional economy and a potential contributor to localized air pollution. To the west lies Lake Apoyo, a volcanic crater lake, which can influence humidity and local weather systems. The urban–rural gradient transitions relatively quickly, with agricultural fields and smaller settlements bordering the city limits. The proximity to León, a larger industrial and commercial center, means Nagarote is indirectly affected by industrial emissions and transportation-related pollution. The prevailing winds generally flow from the northwest, carrying potential pollutants from León and surrounding areas. The terrain, with its gentle slopes, can sometimes trap pollutants, particularly during periods of low wind speed. The volcanic soil, while fertile, can also contribute to dust generation during dry periods, impacting air quality. Nagarote’s location within a fertile agricultural zone, combined with its proximity to a larger urban center, creates a complex interplay of factors influencing its air quality.

Nagarote’s tropical climate dictates a distinct wet and dry season pattern, significantly impacting air quality throughout the year. The dry season, typically spanning November to April, often sees a build-up of particulate matter. Reduced rainfall and lower humidity contribute to increased dust levels from agricultural activities, particularly sugarcane harvesting and burning, a common practice for land clearing. Stagnant air conditions are also more frequent during this period, hindering pollutant dispersion. Temperature inversions, where cooler air is trapped beneath a layer of warmer air, can occur, further exacerbating the problem by preventing vertical mixing and concentrating pollutants near ground level. The wet season, from May to October, brings frequent rainfall, which naturally cleanses the atmosphere, washing away particulate matter and reducing overall pollution. However, heavy rainfall can also lead to increased humidity and fog, which, while reducing visibility, can trap pollutants close to the ground in localized areas. Wind patterns shift during the wet season, often bringing moisture-laden air from the Pacific, which can temporarily improve air quality. Months like February and March, during the peak of the dry season and sugarcane harvest, are generally periods to avoid strenuous outdoor activity, especially for individuals with respiratory sensitivities. Conversely, June and July, during the height of the wet season, typically offer the best air quality. Sensitive groups, including children, the elderly, and those with pre-existing respiratory conditions, should be particularly cautious during the dry season, limiting outdoor exposure and taking necessary precautions.