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Abangaritos, nestled within the Puntarenas province of Costa Rica, occupies a geographically significant position on the Pacific coastal plain. Located at approximately 10.2492° latitude and -85.0268° longitude, the city’s elevation is relatively low, contributing to a warm, humid climate characteristic of the region. The surrounding landscape is dominated by a mosaic of agricultural lands, primarily dedicated to banana and sugarcane cultivation, interspersed with patches of secondary rainforest. This proximity to intensive agricultural practices is a key factor influencing local air quality. The Pacific Ocean lies a short distance to the west, providing a moderating influence on temperatures but also introducing potential sources of marine aerosols. The urban fabric of Abangaritos exhibits a gradual transition from a small urban core to a more rural setting, with scattered residential areas and agricultural holdings extending outwards. The terrain is gently undulating, with occasional small hills, which can influence local wind patterns and the dispersion of pollutants. While Abangaritos isn't situated directly within a major industrial belt, its regional role as a service and agricultural hub means that transportation-related emissions, particularly from trucks servicing the agricultural sector, are a notable contributor to the local air quality profile. The urban–rural gradient is relatively smooth, meaning agricultural activities and their associated emissions are consistently present within the city's sphere of influence, impacting air quality throughout the year. The prevailing winds generally blow from the east, carrying potential pollutants from inland agricultural zones towards the coastal areas.

Abangaritos experiences a tropical climate with distinct wet and dry seasons, significantly impacting its air quality dynamics. The dry season, typically spanning from December to April, often sees a slight improvement in air quality due to reduced rainfall and increased sunshine. However, this period can also be marked by increased agricultural burning, a common practice for land clearing and crop residue management, which releases particulate matter and other pollutants. The lack of consistent rainfall during this time allows these pollutants to linger, particularly during periods of stagnant air. The wet season, from May to November, brings frequent rainfall, which naturally helps to cleanse the atmosphere by removing particulate matter. However, heavy rainfall can also lead to increased humidity, which can exacerbate respiratory issues for sensitive individuals. Fog, a common occurrence during the wet season, can trap pollutants near the ground, creating localized air quality concerns. Wind patterns are generally variable throughout the year, but during the dry season, periods of calm winds are more frequent, hindering pollutant dispersion. The months of March and April, coinciding with the end of the dry season and the beginning of the wet season, often present a challenging period for air quality due to a combination of agricultural burning and reduced rainfall. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during these periods, limiting outdoor activities and monitoring for any adverse health effects. During the wettest months (September-November), while overall air quality tends to be better, the increased humidity can still pose a challenge for those with asthma or allergies.