Metal sculptures, often celebrated for their durability and aesthetic appeal, face unique challenges in areas with high levels of airborne pollutants. Pollutants like sulfur dioxide, nitrogen oxides, and particulate matter can accelerate corrosion, leading to discoloration, pitting, and structural weakening over time. However, the extent of damage depends on the metal used. Stainless steel and bronze, for instance, exhibit superior corrosion resistance due to protective oxide layers, while iron or untreated steel may degrade faster.

To mitigate pollution effects, artists and conservators employ protective coatings like wax, lacquer, or specialized sealants. Regular cleaning is also crucial to remove pollutant buildup. In heavily industrialized areas, sculptures may require more frequent maintenance or placement in sheltered locations. Despite these challenges, many metal artworks endure for decades, their weathered patinas even adding historical character. Innovations in alloy compositions and anti-corrosion technologies continue to enhance the resilience of metal sculptures in polluted environments, ensuring their longevity as public art.