The eerie scenes of orange skies have returned as Midwest cities like Chicago and Detroit, plus much of the Great Lakes region, found themselves shrouded in smoke from Canadian wildfires this week.
The orange hue is a tangible sign of poor air quality that has health expertsSunlight is made up of white light, which contains all of the colors of the rainbow. The interference of the smoke alters how we see it.
Orange hues are usually seen at certain times of the day, which is why at some points the sky has a more gray-ish haze and other times it's orange. She added that when the sun is low in the sky,"it's almost doubling and tripling how many particles that ray of light is running through."Earlier this month, TODAY weatherman Al Roker explained on the show why the sky is normally blue. It's because when air molecules reflect sunlight, they scatter shorter wavelengths such as blue, which is how it appears to our eyes.
"For example, with a rainbow, you'll have the water molecules, which are somewhere in between the air and a smoke particle," he continued."That distributes all the colors, so that's why we see a rainbow after a rainstorm."Seeing that thick orange haze and smelling the smoke are clear signs to avoid being outdoors for any prolonged period, according to experts.
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