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Rovato, nestled in the heart of Lombardy, Italy, occupies a geographically strategic position within the Po Valley, a region historically prone to air quality challenges. The city sits at an elevation of approximately 78 meters above sea level, characterized by a relatively flat terrain typical of the alluvial plain formed by the Oglio River, which flows nearby. This proximity to the river, while providing irrigation for the surrounding agricultural lands – primarily maize and wheat – also contributes to humidity and potential for stagnant air masses. Rovato is situated within a densely populated and industrialized area, benefiting from transport links but also experiencing the consequences of regional economic activity. The urban–rural gradient is noticeable, with agricultural fields immediately surrounding the city giving way to more intensive industrial and residential areas towards larger urban centres like Brescia and Bergamo. The Po Valley’s basin shape, surrounded by the Alps and Apennines, limits air circulation, trapping pollutants during periods of low wind. This topographical constraint, combined with the concentration of industry and agriculture, makes Rovato particularly susceptible to particulate matter and ozone accumulation. The city’s location along major transportation corridors further exacerbates these issues, with road traffic contributing significantly to local emissions.

Rovato’s air quality follows a distinct seasonal pattern. Winter, from December to February, often sees the highest pollution levels due to stable atmospheric conditions and increased reliance on heating systems, particularly biomass burning in rural areas surrounding the city. Temperature inversions are common, trapping cold, dense air near the ground and concentrating pollutants. Spring (March-May) brings a gradual improvement as temperatures rise and heating demand decreases, but agricultural activities like fertilizer application can contribute to ammonia emissions. Summer (June-August) typically experiences the best air quality, aided by stronger winds and higher temperatures promoting pollutant dispersion, although ozone formation can be a concern during prolonged heatwaves. However, stagnant conditions can still occur. Autumn (September-November) presents a transitional period, with increasing heating demand and the potential for fog, which traps pollutants. Sensitive individuals – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter and autumn mornings. Monitoring pollen levels is also crucial in spring. Avoiding peak traffic hours and choosing active transport options when possible can further mitigate exposure throughout the year.