云量：在晴朗无云的天空，紫外线辐射水平最高。但是，即使有云层，紫外线辐射水平也可以很高。

Cloud cover: UV radiation levels are highest under cloudless skies but even with cloud cover, they can be high.

youdao

今天早晨，申城的天空状况也非常不错，空中云量较少。

This morning, celestial state of Shen Cheng is very pretty good also, the cloudiness in sky is less.

youdao

今天早晨，申城的天空状况也非常不错，空中云量较少。

This morning, celestial state of Shen Cheng is very pretty good also, the cloudiness in sky is less.

youdao