Across the state, Oregon’s air is getting harder to breathe. The number of days the air quality index was unhealthy for ...

Here's why the Canadian wildfire smoke is returning to the state and what to know about the latest air quality advisory.

Winds could blow smoke from the Bear Gulch fire burning on the Olympic Peninsula, bringing the potential for unhealthy air ...

The Bay Area Air District has issued an air quality advisory in the region for Tuesday because of smoke from a wildfire in ...

Bay Area residents may see hazy skies and smell smoke, but the air district does not expect pollutant levels to exceed ...

While the smoke is worst along the Western Slope where the fires are burning, levels are also fluctuating on the Front Range.

Air quality alerts are in place again for the entire Western Slope as firefighters battle more than 20 fires. The Colorado ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have sent smoke pouring across large sections of the country — a problem that’s ...

For most of the past decade, forecasters have been able to use satellites to track these smoke plumes, but the view was only ...

An air quality advisory has been issued in the Bay Area for Tuesday due to wildfire smoke drifting in from the Gifford Fire ...

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