Acid rain poses a significant threat to outdoor bronze sculptures, causing corrosion and discoloration over time. To prevent damage, regular maintenance is essential. Start by cleaning the sculpture with a mild, pH-neutral soap and distilled water to remove pollutants. Apply a high-quality microcrystalline wax every 6-12 months to create a protective barrier against acidic moisture. For added protection, consider using a lacquer or sealant specifically designed for bronze.

Environmental adjustments can also help. If possible, relocate sculptures to sheltered areas or install protective covers during heavy rainfall. Planting trees or shrubs nearby can reduce direct exposure to acid rain. Regularly inspect the sculpture for early signs of damage, such as green patina streaks, and address them promptly.

For long-term preservation, consult a professional conservator for specialized treatments like corrosion inhibitors. By combining proactive care with preventive measures, you can ensure your bronze sculptures remain vibrant and intact for generations.