Add Yahoo as a preferred source to see more of our stories on Google. The air in the Boise area has been awful in recent days as wildfire smoke has poured into the Treasure Valley. The air-quality ...

When wildfires burn, the smoke can travel long distances and degrade air quality far away, which presents risks for those breathing it. Fires burning in one state can make air worse several states ...

HANOI, Vietnam (AP) — Everyone loves a breath of fresh air. Unfortunately, too often our air is anything but fresh. While air quality varies dramatically from place to place and day to day, nearly the ...

Phoenix had a day of bad air quality on Jan. 1. The bad air came after a night of fireworks. One health expert says the fireworks contributed to the bad air quality. PHOENIX - A constant barrage of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. HANOI, Vietnam (AP) — Everyone loves a ...