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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 2016
Goose Bay 2017
Toronto 2016
Toronto 2017
Churchill 2016
Churchill 2017
Resolute 2016
Resolute 2017
Eureka 2016
Eureka 2017
Alert 2016
Alert 2017
Edmonton 2016
Edmonton 2017
Saturna 2016
Saturna 2017
Richmond 2015
Richmond 2016

To find plots for previous years visit our FTP site at