Ozone hole and UV forecast

Clear-sky UV index for 30 Apr 2025
With a thinner ozone layer and a higher position of the sun in the sky more ultraviolet radiation will reach Earth’s surface.
The clear-sky UV index is the effective UV irradiance (1 unit equals 25 mW/m²) reaching the Earth’s surface. The clear-sky UV index is based on the CIE action spectrum for the susceptibility of the caucasian skin to sunburn (erythema) and it is valid for cloud-free conditions at local solar noon. Forecasts are provided for today and the next few days.

Last 8 Days (show 8 day forecast)

22 Apr

23 Apr

24 Apr

25 Apr

26 Apr

27 Apr

28 Apr

29 Apr