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Córdoba, Argentina, situated at -31.4356 latitude and -62.0714 longitude, presents a unique geographic context influencing its air quality. The city, home to 620,01 residents, lies within the Córdoba Province, nestled in a valley surrounded by the Sierras Chicas mountain range. This topography creates a bowl-like effect, potentially trapping pollutants during periods of atmospheric stability. The Suquia River flows nearby, but doesn’t exert a strong moderating influence on regional air circulation. Unlike coastal cities, Córdoba lacks a direct marine influence. The surrounding landscape is a mix of agricultural land – primarily dedicated to soybean, wheat, and corn cultivation – and increasingly, expanding urban sprawl. To the east, the pampas grasslands stretch towards Buenos Aires. Industrial activity is concentrated in and around the city centre, with smaller pockets in surrounding areas. The urban-rural gradient is relatively steep, transitioning quickly from dense urban areas to agricultural zones and then to the foothills of the Sierras Chicas. This proximity to agricultural practices introduces potential for particulate matter from soil disturbance and seasonal burning. The city’s elevation, around 150 meters above sea level, contributes to cooler temperatures and influences wind patterns, impacting pollutant dispersion.

Córdoba experiences a temperate climate with distinct seasons that significantly impact air quality. Spring (September-November) brings increasing temperatures and wind, initially dispersing winter pollutants, but also pollen from the surrounding agricultural lands, potentially exacerbating respiratory issues. Summer (December-February) is typically the hottest and driest period, with stable atmospheric conditions and infrequent rainfall leading to pollutant build-up, particularly ozone formation due to intense sunlight. August, often the hottest month, can see particularly stagnant air. Autumn (March-May) offers a transition period with cooler temperatures and increased rainfall, generally improving air quality as pollutants are washed away. However, agricultural burning often peaks during this time, introducing significant particulate matter. Winter (June-August) is characterized by cooler temperatures, increased humidity, and frequent temperature inversions. These inversions trap pollutants near the ground, leading to higher concentrations of particulate matter and other pollutants. Sensitive groups, including children, the elderly, and those with respiratory conditions, should limit outdoor activity during winter mornings and periods of agricultural burning. Monitoring wind direction is crucial, as winds from agricultural areas can bring increased particulate matter into the city.