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Lucé, nestled in the heart of the Centre-Val de Loire region of France, occupies a geographically significant position within a gently undulating landscape. Located approximately 11 kilometers southwest of Chartres, a historically important city, Lucé benefits from its proximity to major transportation routes while retaining a distinctly rural character. The town sits at an elevation of around 135 meters above sea level, contributing to relatively stable atmospheric conditions, though localized variations can occur due to the surrounding terrain. The landscape is predominantly agricultural, characterized by fertile plains and rolling fields, typical of the Beauce region. This agricultural zone, while vital to the regional economy, can contribute to particulate matter pollution, particularly during planting and harvesting seasons. To the north, the Eure River meanders through the landscape, offering a natural drainage system and a slight moderating influence on local temperatures. The urban–rural gradient around Lucé is gradual; the town itself is a compact settlement, surrounded by a patchwork of farmland and smaller villages. While Lucé isn't situated directly within a major industrial belt, its location within the broader Loire Valley means it's susceptible to pollutants transported from larger urban centers and industrial areas further afield. The relatively flat terrain can exacerbate this, limiting dispersion of pollutants and potentially leading to localized air quality challenges, especially during periods of stagnant weather. The surrounding forests, though limited, do offer some natural air filtration capacity.

Lucé’s air quality experiences a distinct seasonal rhythm dictated by meteorological patterns and agricultural practices. Spring (March-May) often sees a rise in particulate matter as farmers resume tilling and spreading fertilizers, contributing to a noticeable increase in airborne dust. The warming temperatures also encourage pollen release, impacting those with allergies. Summer (June-August) generally brings improved air quality due to increased convective mixing – warmer air rising and dispersing pollutants – and more frequent rainfall. However, periods of prolonged heat and calm conditions can lead to temperature inversions, trapping pollutants near the ground. Autumn (September-November) presents a mixed picture. While rainfall helps cleanse the air, agricultural activities continue, and leaf litter decomposition releases volatile organic compounds (VOCs). The most concerning period is often late autumn, when cooler, calmer conditions can lead to stagnant air and the accumulation of pollutants. Winter (December-February) frequently brings the lowest air quality, characterized by fog and temperature inversions. These inversions trap cold air and pollutants close to the ground, particularly in the mornings. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit prolonged outdoor exposure during these periods, especially on days with visible fog or low visibility. During the warmer months, outdoor activities are generally safer, but it’s advisable to monitor local conditions and avoid strenuous exercise during heatwaves. The agricultural cycle significantly influences air quality, making awareness of planting and harvesting schedules crucial for minimizing exposure.