The World Heritage Convention is an international treaty that aims to protect cultural and natural heritage around the world. It includes provisions for protecting cultural heritage from the effects of air pollution.

Sulfur dioxide, nitrogen oxides, ozone, and particulate matter are all pollutants that can damage cultural heritage. Sulfur dioxide and nitrogen oxides can cause stone to erode, while ozone can damage organic materials such as wood and paper. Particulate matter can also damage surfaces by abrasion.

Air pollution can cause discoloration, the growth of mold and mildew, and the deterioration of materials in cultural heritage. Discoloration can occur when pollutants react with the surface of the material, while mold and mildew can grow when pollutants provide a food source for these organisms. Deterioration can occur when pollutants break down the structure of the material.

Air pollution can have a negative impact on cultural heritage by causing structural damage, loss of aesthetic value, and economic losses. However, it is unlikely to lead to increased tourism, as people are less likely to visit areas that are polluted.

Reducing emissions from industrial sources, improving air quality monitoring, and developing conservation plans for cultural heritage sites are all strategies that can be used to protect cultural heritage from air pollution.