Here's what to know about air quality indexes in Oklahoma. The Air Quality Index is the Environmental Protection Agency's (EPA) tool for communicating about outdoor air quality and how healthy it is ...

The air quality index (AQI) is a unitless number that presents the concentration of a specific pollutant relative to an EPA-established outdoor air quality standard. AQI ranges are established to ...

You could be exposed to unhealthy levels of air pollution inside your own home even when outdoor air quality is good, a new study has revealed. Researchers at the University of Birmingham in the ...

Table Rock and Persimmon Ridge forest wildfire smoke and ash are in downtown Greenville because of wind and weather. Spartanburg also under air quality alert.

The air quality area of specialization includes both outdoor and indoor air quality. Outdoor air quality ranges in scale from localized, such as ozone in the Denver metro area, to global climate ...