Daily Archives: June 3, 2019

There have been large forest fires in northern Alberta, Canada, and the smoke has drifted over the Midwest, including Wisconsin.

Smoke can cause the sky to appear hazy, even if the smoke is high above the ground. The smoke scatters sunlight to make the sunlight diffuse and grayish. When the smoke is thick, it can cause brilliant red sunsets and sunrises, as it did on Thursday. When light beams interact with particles suspended in air, the light can be scattered or absorbed. Continue reading →