Air Quality Numbers Explained: As pollution in Delhi continues to rise without pause, residents are constantly checking the AQI levels to decide when it might be safe to step outdoors. Air Quality ...

Canadian wildfire smoke is affecting air quality in parts of Michigan. The EPA's air quality index (AQI) uses a color-coded scale to inform the public about air quality and associated health risks.

Ruth Benedict wondered why the weather app on her phone would frequently show a “bad air quality” reading. And, the Geneva ...

Parts of the Midstate have been under an air quality alert this week. The Pennsylvania Department of Environmental Protection issued a “code orange,” saying fine particle pollution was high in Dauphin ...

This winter warm-up was an odd one because it came without much wind. It was nearly calm over the last day. Typically, a big winter warm-up is blown in on a strong southwest wind, which doesn’t allow ...

Air quality appears to have worsened in the Capital Region and Hudson Valley. Stagnant winter air trapping pollutants close to the ground is likely to blame.

Smoke from the Green Fire and other wildfires burning in and near Shasta County are polluting the air over the North State. The Shasta County Air Quality Management District and Shasta County Health ...

Air quality alerts in Pennsylvania are being extended, affecting central counties, including Dauphin, Cumberland, Lebanon, ...