Add Yahoo as a preferred source to see more of our stories on Google. Smoke from hundreds of Canada wildfires continues to blanket the northern U.S., spreading across roughly a dozen states from ...

Canadian wildfire smoke is impacting air quality across a dozen northeastern and midwestern U.S. states. Air quality is expected to remain poor in the Northeast through Tuesday, with some improvement ...

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.

Higher levels of particle pollution from fires burning in Canada are expected to bring health concerns for North Carolina residents this weekend. Improving conditions for the workweek. SEASON THAT WE ...

Canada wildfire smoke is impacting air quality across a dozen U.S. states, primarily in the Northeast and Great Lakes regions. Air quality is expected to remain poor through Wednesday, Aug. 6, with ...