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Year-to-Date UV Index Graphs

The plots show the UV index values, measured by Brewer spectrophotometers, as a function of the season and the time of the day over Canadian stations for the current year up to yesterday. The time is shown as a solar time, i.e. the sun is in its highest position over the horizon exactly at noon. The gray areas indicate periods with no observations. The actual spectral UV data are available (with some delay) from the World Ozone and Ultraviolet Radiation Data Center (WOUDC). The UV Index forecast for selected Canadian cities is available from the Canadian Meteorological Centre (CMC).

Goose Bay 2017
Goose Bay 2018
Toronto 2017
Toronto 2018
Churchill 2017
Churchill 2018
Resolute 2017
Resolute 2018
Eureka 2017
Eureka 2018
Alert 2017
Alert 2018
Edmonton 2017
Edmonton 2018
Saturna 2017
Saturna 2018

To find plots for previous years visit our FTP site at