Greener Living

A Growing Climate Threat Is Putting Californians’ Health at Risk

Hospitalizations across the state are higher on days when extreme heat and wildfire smoke coincide, according to a new study.

A helicopter flies over a fire near a home on Pinecrest Drive during the Oak Fire in Mariposa County, California, on July 23, 2022. 

Photographer: David Odisho/Bloomberg
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Californians exposed to both extreme heat and wildfire smoke on the same day run a greater risk of hospitalization for cardiorespiratory illness than from either threat alone, according to a new study.

High temperatures can trigger heart attacks and strokes, while particulate matter in wildfire smoke is linked to cancer and lung disease. Low-income communities of color are particularly vulnerable to this double-barreled threat driven by climate change, according to the paper published Friday in the journal Science Advances.