Canadian wildfire smoke has worsened the air quality in multiple states and irritated the eyes, noses and throats of many ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring relief later in the week.

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states from Wisconsin to Maine.

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as ...

DEC and DOH issue Air Quality Health Advisories when DEC meteorologists predict levels of pollution, either ozone or fine particulate matter (PM2.5), are expected to exceed an Air Quality Index ...

Ozone and particulate matter will continue to be in the moderate range on Thursday as the thin layer of smoke persists, along with sunshine and a very warm afternoon.

Particulate matter refers to the most common and harmful mixture of pollutant chemicals emitted by car and truck exhausts, usually in some combination of soot, smoke, dust, and liquid droplets.