Wildfires in the western United States and Canada will cause smoky skies in our region on Thursday, but that smoke will ...

As a result, much of the state is blanketed by wildfire smoke and hazy skies, including the Portland metro area. Most areas in Oregon are seeing "moderate" air level qualities, at best.

Hazy skies are sort of a holiday tradition in Phoenix, but not the good kind, especially for people with breathing issues.

Officials issued a Spare the Air Alert through Sunday as large parts of the Bay Area experienced a second day of hazy skies.

With cooler weather and a lack of storm activity, haze built up in Phoenix, settling in around the Valley's edges.

Hazy skies are a sort of holiday tradition in the ... The haze is caused by an atmospheric phenomenon called an inversion, which can trap smoke, dust and other pollutants in stagnant air.