Poté Air Quality Index (AQI)

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Poté, nestled within the state of Minas Gerais, Brazil, occupies a geographically significant position within the Serra da Mantiqueira mountain range. Located at approximately -17.8069° latitude and -41.7858° longitude, the city’s elevation of around 850 meters above sea level contributes to a cooler climate compared to lower-lying regions of Minas Gerais. The surrounding landscape is characterized by rolling hills, dense Atlantic Forest remnants, and small agricultural plots, creating a distinct urban–rural gradient. Poté’s proximity to larger urban centers like Pouso Alegre and Poços de Caldas influences its economic activities, with some commuter traffic impacting local air quality. The region’s terrain, with its steep slopes and valleys, can significantly affect air circulation patterns, potentially trapping pollutants under certain meteorological conditions. While not directly adjacent to major rivers, the area receives rainfall contributing to the local hydrological cycle, which can influence atmospheric moisture and pollutant dispersion. The dominant land use is a mix of agriculture (coffee, dairy farming are prevalent) and small-scale industry, particularly related to food processing and light manufacturing. This combination of agricultural practices and localized industrial activity, coupled with the mountainous terrain, creates a unique setting where air quality is susceptible to both regional and localized factors. The Atlantic Forest, though fragmented, still plays a role in filtering some pollutants, but its effectiveness is diminished by the degree of deforestation and fragmentation.

Poté’s tropical highland climate dictates a distinct wet and dry season pattern, profoundly influencing air quality throughout the year. The dry season, typically spanning from April to September, often sees a noticeable increase in particulate matter. Reduced rainfall means less atmospheric cleansing, and the drier air can exacerbate dust from agricultural activities and unpaved roads. Temperature inversions are more frequent during these cooler months, particularly in the mornings, trapping pollutants closer to the ground. Agricultural burning, though regulated, can still occur during land clearing and crop residue management, contributing to localized smoke events. The wet season, from October to March, brings increased rainfall and higher humidity, generally leading to improved air quality as pollutants are washed from the atmosphere. However, periods of prolonged fog, common during the wet season, can temporarily reduce visibility and trap pollutants near the surface. The combination of cooler temperatures and stagnant air during the dry season, coupled with agricultural practices, presents the most challenging period for air quality. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during these months, limiting outdoor exertion during peak morning hours. During the wet season, while overall air quality is generally better, periods of dense fog can still pose a localized risk, and those with asthma should monitor their symptoms closely. The interplay of rainfall, temperature, and agricultural activity creates a dynamic air quality profile throughout the year in Poté.