The Air Quality Index Chart: What Does Each Color Mean?

That smoke has made its way to the US, primarily affecting air quality in parts of the Midwest, the East, and the North. Be ...
NPR

How purple came to be a scarier color than red on the Air Quality Index

Those affected by wildfire smoke focus on the colors red, purple and maroon on the air quality charts. Red used to be the scariest color. Why did that change?(Story aired on ATC on June 28, 2023 ...
AOL

Is the Air Quality Index enough? What the AQI can — and can't — tell you about how healthy the atmosphere is.

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free skies this week. The Air Quality Index (AQI) — which measures the ...