Portland's Air Quality Ranks Worst In The World

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.


US-FIRES (Gettty Images)

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