Cloud-free and cloud-modified UV index data for an area covering The Netherlands for each quarter of an hour from 03:00 UTC up to and including 21:45 UTC, both in the usual non-dimensional unit, and g...
The KNMI provides a daily solar irradiation forecast. The sun's power is a measure for the amount of ultraviolet radiation (UV) in sunlight that reaches the earth. The higher the sun is in the sky, th...