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| Ozone | Ultraviolet Radiation | Ozone Hole History | Archive |
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Clear-sky UV index for 29 Oct 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. |
8 Day Forecast (show last 8 days)
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| 30 Oct | 31 Oct | 1 Nov | 2 Nov | 3 Nov | 4 Nov | 5 Nov | 6 Nov |
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Ronald van der A, Bas Mijling © KNMI/TEMIS, 2019 |