Tarumã Air Quality Index (AQI)

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Tarumã, a municipality nestled within the state of São Paulo, Brazil, presents a unique geographic context influencing its air quality. Located at approximately -22.7469 latitude and -50.5769 longitude, the city occupies a relatively flat terrain typical of the São Paulo interior, with an elevation around 460 meters. This positioning within the Bauru-Marília Plateau contributes to limited natural air dispersion. The surrounding landscape is predominantly agricultural, characterized by sugarcane and soybean cultivation, alongside patches of Atlantic Forest remnants. The city’s proximity to larger urban centers like Bauru (approximately 60km) and Marília (around 80km) introduces potential for pollutant transport. While not directly bordering a major water body, the Ribeirão do Quilombo, a small river, flows nearby, potentially influencing local humidity and temperature inversions. The urban-rural gradient is fairly sharp; Tarumã remains a smaller, less industrialized city, but is increasingly impacted by agricultural practices – including seasonal burning – and the expanding influence of regional transportation networks. The lack of significant topographical features hinders the flushing of pollutants, making localized emissions a more prominent concern. This combination of factors creates a microclimate susceptible to pollutant accumulation, particularly during periods of atmospheric stability.

Tarumã experiences a tropical climate with distinct wet and dry seasons, profoundly impacting air quality. The dry season, typically from May to September, sees a significant increase in particulate matter due to agricultural burning for sugarcane harvesting and land preparation. Lower humidity and reduced rainfall exacerbate these conditions, allowing pollutants to linger. August and September are often the most challenging months for respiratory health. Conversely, the wet season, from October to April, brings relief through rainfall which effectively washes pollutants from the atmosphere. However, even during the wet season, localized emissions from vehicle traffic and smaller agricultural activities can contribute to air quality concerns. Temperature inversions, common during the cooler nights of the dry season, trap pollutants near the ground, worsening air quality. Fog, prevalent in the cooler months, can also enhance pollutant concentration. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit strenuous outdoor activity during the dry season, particularly in the late afternoon and early morning. Monitoring wind patterns is crucial; southerly winds can transport pollutants from more industrialized areas to the north.