Thousands Urged To Stay Inside In Oregon [View all]

Thousands Urged To Stay Inside In Oregon

By Amanda Greenwood

https://www.newsweek.com/thousands-urged-stay-inside-oregon-air-pollution-epa-ozone-11139198

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The map showed an area of fine particle (PM2.5) pollution in the "unhealthy" Air Quality Index (AQI) category around La Pine in Deschutes County, and John Day in Grant County as of 2.45 a.m. ET.

PM2.5 are tiny particles of pollution that are usually 2.5 micrometers or less in size—roughly 30 times smaller than a strand of hair—that enter the atmosphere and are often unknowingly inhaled. They can come from various sources, ranging from construction sites and wildfires, to power plants and car emissions.


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A man crosses a street in Portland, Oregon, amid hazy weather conditions in 2020. (ROBYN BECK/AFP/Getty Images) | Photo by ROBYN BECK/AFP via Getty Images