What is the ph of rainwater?

The pH of rainwater is typically slightly acidic, with an average pH of around 5.6. This acidity is mainly due to the presence of carbon dioxide in the atmosphere, which dissolves in the rainwater to form carbonic acid. Other factors such as industrial pollution and emissions can also affect the pH of rainwater, making it even more acidic in certain regions.

It is important to monitor the pH of rainwater, as highly acidic rain can have negative effects on the environment. Acid rain can harm aquatic life, damage buildings and infrastructure, and leach toxic metals from soil into water sources. It can also have an impact on soil quality and plant growth. Monitoring the pH of rainwater can help to assess the level of acidity and take measures to mitigate its effects on the environment.