20 of the 30 most polluted U.S. counties in 2021 were in California: Report

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20 of the 30 most polluted U.S. counties in 2021 were in California: Report
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In 2021, 20 of the 30 counties with the highest levels of pollution were in California, according to an air quality report.

. He weighed in on the effects of pollution.

Perez says the toxicity and length of exposure to pollutants can determine the effects on your health.The map above shows areas in dark red and orange spread across northern to central California, indicating higher annual averages of particulate matter. San Diego County does not appear to be included in that group., 2021 had more than 7,000 wildfires and 2.5 million acres burned across the state, with nearly 1 million of those acres from the Dixie Fire in Northern California.

Perez said it can be hard to generalize, but long-term and short-term exposure to pollutants should be considered. In other words, he described these as acute and chronic, which can determine the impact they can have on someone's health.

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