Creating bronze sculptures for high-pollution urban areas presents unique challenges that artists and conservators must address. One major issue is accelerated corrosion caused by airborne pollutants like sulfur dioxide and nitrogen oxides, which react with bronze to form unsightly patinas or even structural damage. The acidic rain common in polluted cities further exacerbates this problem, eating away at fine details over time.

Maintenance becomes a constant battle, requiring frequent cleaning and protective coatings that may alter the artist's intended appearance. The cost of upkeep often surpasses initial installation budgets, forcing difficult choices about preservation priorities. Additionally, the darkening or greening of bronze surfaces due to pollution can clash with urban aesthetics, leading to public dissatisfaction.

Artists must also consider environmental impact, as traditional bronze alloys and patination chemicals may leach harmful substances into already compromised ecosystems. Some sculptors now experiment with alternative alloys or protective technologies, but these solutions often lack the proven longevity of traditional bronze. Despite these hurdles, bronze remains a popular medium for public art, demanding innovative approaches to ensure its survival in our increasingly polluted cities.