Traditional Culture Encyclopedia - Weather forecast - How many levels of ultraviolet intensity appear in the current weather forecast?

How many levels of ultraviolet intensity appear in the current weather forecast?

15, Baidu encyclopedia has.

Chinese name: ultraviolet index

Mbth: ultraviolet index

The range of ultraviolet index is represented by a number from 0 to 15. Usually, the ultraviolet index at night is 0, and the ultraviolet index in tropical, plateau and sunny days is 15.