Volcanic gases are gases released during volcanic eruptions and from volcanic vents. The most common gases include water vapor, carbon dioxide, sulfur dioxide, and hydrogen sulfide. These gases can escape from magma as it rises to the surface, contributing to the formation of volcanic plumes and affecting the surrounding environment. When released into the atmosphere, volcanic gases can impact air quality and climate. For example, sulfur dioxide can lead to acid rain, while carbon dioxide can contribute to greenhouse gas effects. Monitoring these gases is essential for understanding volcanic activity and potential hazards to nearby communities.