Ultraviolet radiation, or UV radiation for short, is electromagnetic radiation with a wavelength between 1 nanometer (nm) and 380 nm. It is invisible to the human eye. There are three forms of UV radiation: UV-A (315-380 nm), UV-B (280-315 nm) and UV-C (100-280 nm). 4 percent of solar radiation are UV rays. They can - without us feeling any heat - damage cells and cause burns on the skin and eye damage in a short time.
In the longer term, too much sunbathing leads to premature aging of the skin, a higher risk of skin cancer (melanoma) or cataracts. The UV index measures the strength of the sun's UV radiation. The higher the UV index, the stronger and more harmful the sun's radiation.
Particulate matter, ozone, nitrogen dioxide, and sulfur dioxide.
- Particulate matter PM10 Particulate matter is a part of airborne dust. PM stands for Particulate Matter measured in micrometers (μm). PM10 refers to all particles with a diameter of less than 10 μm. Air pollution with tiny dust particles is one of the biggest challenges for our air pollution control policy today. In cities and in areas close to traffic, the limit value for fine dust is often exceeded. According to the LRV, the daily mean PM10 concentration may not exceed the limit of 50 µg/m3 more than once a year.
- Ozone The LRV stipulates that the hourly mean ozone concentration must not exceed 120 µg/m3 more than once a year.
- Nitrogen dioxide (NO2) The LRV stipulates that the daily mean nitrogen dioxide concentration must not exceed 80 µg/m3 more than once a year.