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Villa Nueva, nestled within the Córdoba Province of Argentina, occupies a geographically significant position within the Pampas region. Located at approximately -32.4331° latitude and -63.2475° longitude, the city sits at an elevation of roughly 600 meters (1,969 feet) above sea level, contributing to a generally temperate climate. The surrounding landscape is characterized by rolling hills and fertile plains, typical of the central Argentine Pampas, historically a vast grassland. Villa Nueva’s proximity to Córdoba City, the provincial capital, places it within the metropolitan area’s urban influence, experiencing a gradual urban–rural gradient as one moves outwards. While not directly adjacent to major rivers, the Cuenca del Río Dulce watershed lies within the broader region, influencing local hydrology and potentially impacting atmospheric moisture content. The city’s location is not immediately adjacent to large industrial zones, but it benefits from and is affected by the industrial activity concentrated in Córdoba City, which can contribute to regional air pollution transport. Agricultural activities, particularly grain and livestock farming, are prevalent in the surrounding areas, introducing potential sources of particulate matter and biogenic volatile organic compounds (BVOCs) into the atmosphere. The terrain, with its gentle slopes, can influence local wind patterns and the dispersion of pollutants, sometimes leading to localized concentrations, especially during periods of calm weather. The Pampas’ generally flat topography, combined with the city’s position within a basin-like area, can occasionally trap pollutants, particularly during temperature inversions.

Villa Nueva’s air quality exhibits a distinct seasonal pattern dictated by the interplay of meteorological factors and regional activities. The warmer months (December to February) are generally characterized by higher temperatures and increased solar radiation, leading to elevated levels of ozone, a secondary pollutant formed through photochemical reactions. Agricultural burning, a common practice in the surrounding rural areas to clear fields, contributes significantly to particulate matter (PM) concentrations during this period, often creating hazy conditions. Conversely, the cooler months (June to August) typically see lower ozone levels due to reduced sunlight intensity. However, these months are prone to temperature inversions, where a layer of warm air traps cooler air near the ground, hindering vertical mixing and leading to pollutant accumulation. Fog, common during these colder months, further exacerbates this issue by trapping pollutants close to the surface. Spring (September to November) brings a transitional period with increasing wind speeds, which generally aids in pollutant dispersion, improving air quality. Autumn (March to May) sees a gradual decrease in temperatures and a shift in wind patterns, with occasional agricultural burning continuing to impact PM levels. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during periods of agricultural burning and temperature inversions, limiting outdoor exertion and monitoring local air quality reports. Avoiding strenuous outdoor activities during the hottest part of the day in summer is also advisable. The city’s location within the Pampas means that regional weather systems, including frontal passages, can significantly influence air quality, bringing periods of cleaner air or exacerbating existing pollution.