2 days in the same week so the sun would be the same distance from Earth, no clouds anywhere, how can one day have a a different UV danger rating to the other?
In: Planetary Science
Just because the sun and clouds are the same from day to day does not mean the overall air quality is the same from day to day. There might be higher or lower humidity, ozone in the upper atmosphere, or particulate matter (local pollution) in the air. There are a bunch of factors that affect UV danger other than just sun and clouds
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