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Campos Belos, Goiás, nestled within the Brazilian Cerrado biome, presents a unique geographic profile influencing its air quality. Located at approximately -13.0369° latitude and -46.7719° longitude, the city sits at an elevation of roughly 430 meters (1,411 feet) above sea level, contributing to a relatively stable atmospheric layer. The surrounding landscape is dominated by the Cerrado, a vast tropical savanna characterized by grasslands interspersed with gallery forests along seasonal streams and rivers. This proximity to extensive agricultural lands, particularly soybean and maize cultivation, is a key factor in regional air quality. Campos Belos lies within the larger Goiana microregion, a significant agricultural belt in Goiás state, meaning agricultural burning practices, common during land clearing and harvest preparation, can significantly impact local air quality. The urban–rural gradient is relatively sharp, with the city transitioning quickly into the Cerrado landscape. While not directly adjacent to a major river, the region experiences seasonal rainfall, influencing humidity levels and atmospheric stability. The city's relatively small size (population 18,108) means industrial activity is limited, primarily focused on agricultural processing and small-scale manufacturing. However, the transportation of agricultural goods via road networks contributes to localized emissions. The Cerrado's characteristic dry season, coupled with the city's location within a broad, relatively flat plain, can sometimes lead to stagnant air conditions, exacerbating the impact of regional pollution sources.

Campos Belos experiences a tropical savanna climate, characterized by distinct wet and dry seasons, profoundly impacting air quality patterns. The dry season, typically spanning from May to September, is the period of greatest concern. Reduced rainfall leads to lower atmospheric moisture, creating drier conditions conducive to the accumulation of particulate matter. Agricultural burning, a prevalent practice for land preparation, intensifies during this period, releasing significant quantities of smoke and pollutants into the atmosphere. Temperature inversions, common during the cooler dry season nights, trap pollutants near the ground, further degrading air quality. The wet season, from October to April, brings increased rainfall and higher humidity, naturally cleansing the atmosphere and dispersing pollutants. However, intense rainfall events can occasionally lead to soil erosion and dust storms, temporarily impacting air quality. The months of August and September often experience the poorest air quality due to peak burning activity. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor exertion during these months. During the wet season, while generally cleaner, periods of fog can still trap pollutants, requiring caution. Maintaining awareness of regional fire alerts and adhering to local health advisories is crucial for protecting respiratory health throughout the year. The interplay of agricultural practices, meteorological conditions, and the Cerrado biome dictates the seasonal air quality narrative in Campos Belos.