Ultraviolet radiation model

The UV Index model gives an indication of the maximum daily level of ultraviolet radiation (UVR) expected at ground level on a cloudless day.

ARPANSA calculates the models for each site using a computer program that considers, among other parameters, the time of year and averaged ozone values.

This chart displays the typical UV Index value that can be expected at solar noon (when the sun is highest in the sky) at our measurement locations. The actual value could be slightly higher or lower depending on ozone levels and atmospheric conditions, particularly cloud cover.