Notes on Air Quality Metrics in Eugene/Springfield

You’ve probably discovered this page The gauges in the widget show weighted averages:

“The current AQI represents the amount of pollution in the air using a weighted average of the last twelve hours and is a forecast of the current days average pollution level.”

For more detailed information see this link This differentiates between the readings at Amazon Park, Highway 99, and Springfield City Hall.

As of 10:00 am, the AQI is 182 at Amazon and 434 in Springfield.

For a nice color coded map of Oregon, see

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