Smoke from wildfires burning across the West stretches far from its sources, with smoke and haze reaching into Canada and well into the central United States. As smoke fills the sky from the intense wildfires burning across parts of the West, air quality alerts are being issued. The Ferguson Fire west of Yosemite National Park is producing dangerous air quality for parts central California, per the National Weather Service. And this is not only area being impacted by poor air quality due to fires. Much of southern Oregon is dealing with these concerns, with air quality alerts likely lingering as long as fires persist. Pollutants in smoke can cause burning eyes, runny nose, aggravate heart and lung diseases, as well as aggravate other serious health problems. For these reasons, people should limit outdoor activities and keep children indoors if it is smoky. And smoke from these fires stretches far from it's sources, with smoke and haze reaching into Canada and well into the central United States. For WeatherNation, I am Meteorologist Marcus Walter.