PORTLAND, Ore. (KOIN) – We start the new week with either a mix of sun and clouds or sun and wildfire smoke. Depending on where you’re at, you will experience one or the other, potentially both.

Image of “fire clouds” above the Line Fire in California on September 9. The smoke from this fire, as well as others in the area, is making the air quality dangerous for some people.

The fire broke out in the town of Mentrida in the Castile-La Mancha region, around 30 miles southwest of the capital ...

Russia’s towering Klyuchevskoy volcano, located on the Kamchatka Peninsula, has captured the world’s attention after its latest eruption sent a dramatic display of smoke, ash, and lava flowing into ...

These mega-clouds of world-traveling smoke may become a regular, annual occurrence, according to Berman — "if not multiple times every single year," he said.

Smoke squelches rain. Scientists have seen evidence of these effects elsewhere—but not by collecting cloud droplets directly from the air, and not over such drought-plagued land as the western U ...

The cloud of smoke inundating the East Coast on Wednesday — fueled by more than 400 active fires burning across Canada, with more than half of them considered “out of control ...

Wildfires generate vast plumes of smoke, which can reach the humid upper atmosphere, cool down and develop into clouds that can remain there for months, warming the air, drying out the earth and ...

An uncontrolled wildfire burned Thursday outside Madrid and sent a giant cloud of smoke over the Spanish capital. The fire ...