Yesterday's UV dose and archives

Emissions

      - NO_x emissions
      - NH₃ emissions
      - CH₄ emissions
      - SO₂ emissions

Ozone layer

      - Total column
      - Assimilated ozone
      - Ozone hole
      - Ozone profiles

UV radiation

      - UV index
      - UV dose

Short-lived Climate Forcers

      - NO₂
      - CH₂O
      - Aerosol index
      - ADRE

Volcanic plumes

- SO₂ & AAI

Auxiliary data

      - Cloud info
      - Albedo climatologies
      - SIF

Contact

page last modified:
March 2026

Yesterday's UV dose

The UV dose is the effective UV irradiance (given in kJ/m2) reaching the Earth's surface integrated over the day and taking the attenuation of the UV radiation due to clouds into account. The cloud data is compiled from observations by the geostationary Meteosat Second Generation (MSG) satellites up to the end of 2025, as of 1 January 2026 from the Meteosat Third Generation (MTG) satellites. The UV dose is computed for three different action spectra, i.e. for three different health effects: erythema (sunburn) of the skin, vitamin-D production in the skin and DNA-damage.

The maps below show as the cloud-modified and cloud-free vitamin-D UV dose for two regions; a link to maps of other action spectra and regions follows below the maps. For grey areas there is no cloud data available.