Indicators of Climate Change in California
The 2026 edition is organized into seven volumes, including 49 indicators and eight tribal reports. The report documents accelerating and compounding climate impacts across California's water systems, wildfires and public health, terrestrial ecosystems, and coastal and marine environments, with attention to disproportionate impacts on tribes, outdoor workers, and low-income households.
Indicators of Climate Change: Impacts on California Tribes
OEHHA recognizes the value of tribal knowledge in reporting on, and raising awareness of, climate impacts.
Human Health Impacts of Climate Change
OEHHA focuses on human health studies relating increased temperatures to adverse health outcomes such as death and illness including hospital visits, emergency room visits, and birth defects. OEHHA has contributed to the growing body of literature linking deleterious health effects to increasing temperatures and heat waves. These studies have helped identify groups who are vulnerable to heat-related mortality and illness.
Recent Research on Climate Change in California: A bibliography
OEHHA has compiled information relevant to climate change and its impacts in an annotated bibliography with an emphasis on California. This annotated bibliography is intended as a source of current and emerging scientific information on climate change for environmental and public health agencies, the research community, non-government organizations, and the public.
Indicators of Climate Change: Past Reports
Collection of past Indicators of Climate Change in California reports.