Rio Pomba Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Rio Pomba, nestled in the Serra da Mantiqueira mountain range of Minas Gerais, Brazil, occupies a geographically significant position within a region characterized by dramatic topography and a rich agricultural heritage. Located at approximately -21.2750 latitude and -43.1789 longitude, the city sits at an elevation of around 900 meters (2,953 feet) above sea level, contributing to a cooler climate compared to lower-lying areas of Minas Gerais. The surrounding landscape is dominated by steep slopes, dense Atlantic Forest remnants, and rolling hills, creating a visually striking urban-rural gradient. The city’s proximity to the Paraíba do Sul river, though not directly bordering it, influences local humidity and microclimates. Rio Pomba serves as a regional hub for agricultural processing, particularly coffee and dairy, with smaller-scale farming activities prevalent in the surrounding valleys. While not situated within a major industrial belt, the presence of local processing plants and transportation routes contributes to localized pollution sources. The mountainous terrain significantly impacts air circulation; valleys can trap pollutants, while higher elevations experience greater dispersion. The urban character is distinctly provincial, with a compact core and sprawling residential areas clinging to the hillsides. This topography, combined with the prevalence of wood-burning stoves for heating in some households, creates a unique set of challenges for air quality management, particularly during colder months. The city’s location within a biodiversity hotspot also means that air pollution can have significant impacts on sensitive ecosystems.

Rio Pomba’s air quality follows a distinct seasonal pattern dictated by its tropical highland climate. The year is broadly divided into a wet season (roughly November to March) and a drier season (April to October), with significant temperature variations. During the drier months, particularly June to August, cooler temperatures and increased frequency of temperature inversions become a defining feature. These inversions trap pollutants near the ground, leading to periods of stagnant air and potentially elevated concentrations of particulate matter from residential wood burning and agricultural activities. Fog, common during these months, further exacerbates the issue by reducing visibility and hindering pollutant dispersion. Outdoor activities are generally best enjoyed during the shoulder seasons (April-May and September-October) when temperatures are moderate and wind patterns are more favourable. The wet season brings increased rainfall, which naturally helps to cleanse the atmosphere by washing away pollutants. However, heavy rainfall can also lead to soil erosion and the suspension of dust particles, temporarily impacting air quality. The increased humidity during the wet season can also affect respiratory health, particularly for individuals with asthma or other pre-existing conditions. Sensitive groups, including children, the elderly, and those with respiratory illnesses, should exercise caution during the colder, drier months, limiting outdoor exposure and avoiding strenuous activity when air quality is visibly affected. Agricultural burning, a common practice in the region, can also contribute to pollution spikes, particularly during the transition periods between seasons.