Itaí Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

Itaí, nestled within the sprawling municipality of São Paulo, Brazil, occupies a geographically significant position in the southeastern portion of the state. Located at approximately -23.4178° latitude and -49.0906° longitude, the city’s terrain is characterized by gently undulating hills, typical of the São Paulo basin, a region formed by ancient erosion and subsequent fluvial deposition. Itaí sits within the broader Paraíba do Sul River basin, though the river itself is not immediately adjacent to the urban area; its influence, however, shapes the regional hydrology and agricultural practices. The surrounding landscape transitions from urbanized areas of São Paulo’s metropolitan region to agricultural lands, primarily dedicated to sugarcane cultivation and cattle ranching, a common feature of the Paulista countryside. This urban–rural gradient introduces a complex interplay of pollution sources. Itaí’s elevation, relatively low at around 550 meters above sea level, contributes to temperature inversions, particularly during the cooler months, trapping pollutants closer to the ground. The proximity to the larger industrial belts of São Paulo, though not directly within them, means Itaí is susceptible to downwind transport of industrial emissions and vehicle exhaust. The prevailing winds, often influenced by the broader regional weather patterns, can either disperse or concentrate these pollutants, impacting local air quality. The city’s relatively small population (27,382) means localized industrial activity is limited, but the regional context significantly shapes its environmental profile.

Itaí’s subtropical climate dictates a distinct seasonal pattern in air quality. The wet season, typically from October to March, brings increased rainfall, which naturally helps to cleanse the atmosphere by washing away particulate matter and pollutants. However, the increased humidity can also exacerbate respiratory issues for sensitive individuals. The dry season, from April to September, presents a more challenging scenario. During these months, particularly in June and July, temperature inversions are more frequent. Cold, stable air settles in the basin, trapping pollutants released from São Paulo and surrounding agricultural activities. This stagnation leads to a build-up of emissions, especially those from vehicle traffic and agricultural burning, a common practice for land clearing and sugarcane preparation. Fog, often associated with these cooler, drier periods, further reduces atmospheric mixing, intensifying the pollution layer. August and September often see the highest concentrations of particulate matter. Conversely, February and March, coinciding with the peak of the wet season, generally offer the best air quality. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the dry months, limiting outdoor exertion and monitoring local air quality reports. Agricultural burning practices, while crucial for some farmers, significantly contribute to seasonal spikes in air pollution, highlighting the need for sustainable agricultural management.