Creating metal sculptures for high-pollution environments presents unique challenges that demand careful consideration of materials, design, and maintenance. One of the primary issues is corrosion, as pollutants like sulfur dioxide, salt, and industrial chemicals accelerate rust and degradation. Artists must select corrosion-resistant metals such as stainless steel, bronze, or corten steel, though these materials often come at a higher cost.

Another challenge is the need for protective coatings, which may require frequent reapplication in harsh conditions. Environmental factors like acid rain and particulate matter can also dull finishes and erode details over time. Additionally, maintenance becomes more complex in polluted areas, requiring regular inspections and cleaning to preserve the sculpture's integrity.

Balancing aesthetic appeal with durability is another hurdle. While intricate designs may be visually striking, they can trap pollutants, leading to faster deterioration. Simpler, smoother surfaces often fare better but may lack artistic complexity. Ultimately, sculptors must weigh these challenges to create works that endure in high-pollution settings while retaining their artistic vision.