With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, blanketing the skies in haze and lowering air quality across roughly a dozen states from Wisconsin ...

Aerosol particles in high smoke plumes reflect more light back into space. Closer to Earth’s surface, there is more oxygen to absorb light at the 688 nanometer wavelength, so less light is reflected.

Does the air seem thick today? Maybe you're having trouble breathing? Blame Canada. Well, Canadian wildfires at least. Wildfire smoke is drifting across Ohio and much of the United States, and the air ...

Hazy skies continue to linger over Connecticut as smoke from the Canadian wildfires drifts overhead. The Connecticut Department of Energy and Environmental Protection is forecasting "moderate to ...

The sky continued to have a very hazy look to it Tuesday morning in the Boston area as Canadian wildfire smoke is impacting the air quality in parts of Massachusetts. There are some differences ...

Smoke in Michigan is finally clearing after a lengthy bout of pollution from the Canadian wildfires. All advisories have ended, as officials no longer detect unhealthy levels of fine particulate ...

An air quality alert is in effect in Connecticut throughout Aug. 4 due to smoke from the ongoing Canadian wildfires, according to the National Weather Service. The air is unhealthy for sensitive ...

SAN FRANCISCO — Already grappling with an intense heat wave, several Bay Area counties are now under an air quality advisory due to smoke from a wildfire burning in Napa County. RELATED: Map: Pickett ...