What is what?
Tropical Day is a meteorological term indicating the day when the maximum temperature exceeds 30 ° C
Tropical night is the night when the minimum temperature does not drop below 20 ° C
Summer Day is a meteorological term denoting a day when the maximum temperature exceeds 25 ° C
The UV Index scale used in the United States conforms with international guidelines for UVI reporting established by the World Health Organization.
Wind-chill or windchill, (popularly wind chill factor) is the perceived decrease in air temperature felt by the body on exposed skin due to the flow of air.
is an index that combines air temperature and relative humidity, in shaded areas, as an attempt to determine the human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade.