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Climate Change

Climate Change in Washington

Updated Clean Air Rule released

We have released an updated version of the state’s first-ever rule that caps and reduces carbon pollution. Carbon pollution from fossil fuels has reached rampant levels and is trapping heat around the planet, which is changing our climate.

The Clean Air Rule would cap and reduce carbon pollution to help slow climate change and limit the effects and damage to our state's coastal communities, agricultural industries, and drinking water supplies. Learn more about rule >

Climate change in Puget Sound

A new report from the Climate Impacts Group, State of Knowledge: Climate Change in Puget Sound, provides a comprehensive synthesis of relevant research on the likely effects of climate change on the Puget Sound region. Read the report >


What is climate change and what causes it? How is it affecting us, and how will it affect us in the future?

Cutting our greenhouse gas emissions is crucial to reducing the effects of climate change. Here's what we're doing in Washington and what you can do.

Climate change is happening now and will continue to happen. How are we preparing for climate change's impacts?

Climate change is altering the chemistry of ocean water, which has big impacts on Washington's marine life and economy.