These wildfires are affecting more than you'd think. The air quality monitoring website IQAir.com, which ranks air pollution across nearly 100 cities internationally, elevated Portland Friday to its No. 1 position -- as in the worst, with an overall air quality index of 239. The U.S. Environmental Protection Agency’s website listed Portland’s measurement Friday as even higher, at 349.
A measurement of 0 or 50 is considered good, 50 to 100 is moderate, 100 to 150 is unhealthy for sensitive groups and over 150 is unhealthy for everyone. Levels of 300 to 500 are deemed hazardous.
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