The guide provides public health officials with the information they need to prepare for smoke events, communicate health risks and take measures to protect public health. It is also a valuable resource for anyone interested in learning more about what to do when smoke travels from nearby forest fires.

This fourth edition of the guide offers new information and resources that can be used to get communities smoke ready, including fact sheets on what to do before, during and after a wildfire to protect your health.

The document has five chapters: •Health effects of wildfire smoke •Wildfire smoke and air quality impacts •Specific strategies to reduce exposure to wildfire smoke •Communicate air quality conditions during smoke events •Public health actions

The guide is a multi-agency document developed by EPA, U.S. Centers for Disease Control and Prevention/National Institute of Occupational Safety and Health (US CDC/NIOSH), the U.S. Forest Service (USFS), California Air Resources Board (CARB), California Department of Public Health (CA DPH), and California Office of Environmental Health Hazard Assessment (CA OEHHA).