Dust isn't the only threat out there, especially for those with respiratory problems. Smoke from Canadian wildfires is moving south into the U.S., although it is not expected to last as long or be as ...

Where there is a lot of dust — or smoke — in the atmosphere, sunrises and sunsets can appear even more yellow, orange and red than normal, according to the National Weather Service.

See where Canadian wildfire smoke and a plume of dust from the Sahara Desert in Africa will hover over the U.S. East Coast ...

The U.S. Environmental Protection Agency warns that wildfire smoke contains dangerous pollutants in the form of fine particles known as PM 2.5 that can penetrate deep into the lungs and enter the ...