The city's air quality index (AQI) score was 122 as of 8 a.m. June 4, putting it in the unhealthy for sensitive groups range ...

The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

The Air Quality Index is used nationwide to measure the severity ... The index uses six color-coded categories: good (green), moderate (yellow), unhealthy for sensitive groups (orange), unhealthy ...

Wildfires in Canadian provinces of Manitoba, Alberta, Ontario and Saskatchewan are creating smoke visible in Michigan. Here's ...

For example, an AQI value of 50 or below represents good air quality, while a value over 300 represents hazardous air quality. You may like How to choose an air purifier: Everything we have ...

Wildfires in Canadian provinces of Manitoba and Saskatchewan are creating smoke visible in Michigan. How to use the air ...

AQI readings have reported "good" conditions for many recent days. But the remnants of the smoke and ash that blanketed the city are still settling, and those present ongoing risks, Jerrett says.

The color-coded scale stretches from 0 to 500 and is split across six categories, from good to hazardous. If your local air quality is green or yellow (100 or below), it means there’s little ...

But to the surprise of most people, the AQI has been good or moderate across Los Angeles, even in neighborhoods that have been most impacted by the fires. In Pasadena, the AQI went from a high 293 ...