Oregon's index is based on three pollutants regulated by the federal Clean Air Act: ground-level ozone, particle pollution and nitrogen dioxide.
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Air Pollution in Oregon: Real-time Air Quality Index Visual Map · Looking for another city? · Measure the air quality in your neighborhood. Participate with ...
Feb 1, 2024 · Oregon's air quality is generally considered safe to breathe. In 2019, Oregon cities averaged an annual air quality index (AQI) level of 38, ...
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