UV Forecast: London
Change location

International UV Index

Follow the steps below to find out the UV abroad...

1. Begin typing in the name of the country you are visiting, wait a few seconds

2. A drop down box of locations within that country will appear, select the location nearest to where you are going from the drop down menu

3. Then click 'Update location'

Please choose a location
UV Index Table

The UV forecast is expressed as a ‘Solar UV Index’, a system developed by the World Health Organization.

The Met Office UV forecasts include the effects of:

• the position of the sun in the sky;
• forecast cloud cover;
• ozone amounts in the stratosphere.

Forecasters gather all this information and input it in to the easy to understand index from 1 to 11+,
which determines your level of exposure to ultraviolet radiation.

The UV index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the two
weeks towards the end of June). Indices of 9 and 10 are common in the Mediterranean area.

The aim of the index is to warn people of increased risk and encourage them change their behaviour in
order to protect themselves against the risks of skin cancer, skin damage and premature ageing.