When Heat Waves Meet Air Pollution, Death Risks Rise Substantially

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When Heat Waves Meet Air Pollution, Death Risks Rise Substantially
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Rising temperatures and more frequent wildfires are taking a grim toll on human health

CLIMATEWIRE | Summer across the American West has become synonymous with extreme heat and poor air quality — and that combination can be particularly deadly, according to a recent study.

Garcia and her co-authors used temperature and air quality data to calculate how much deaths increased when temperatures were high or air quality low. They found that the risk of death increased by about 6 percent on days with extreme high temperatures and by about 5 percent on days with high concentrations of fine particulate matter, also known as PM2.5.

The results will hopefully inform policymakers as they develop plans to adapt to hazardous climate conditions and protect vulnerable populations, Garcia said. The study’s findings come at a time when millions of Americans are suffering from above-average temperatures and more frequent wildfires, which send particulate matter into the atmosphere, bringing down air quality in surrounding areas and even other states.

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