summer sunlight with a clear sky when the UV Index
was originally designed, but values above 10 are
sometimes possible. Levels above 8 are considered
“very high” and above 11 are considered “extreme.”
Wind chill (popularly wind chill factor) is the
lowering of body temperature due to the
passing-flow of lower-temperature air. In other
words, the air “feels” colder than it is because of the
chilling effect of the wind on the skin.
Table 10: Glossary of terms
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