Canadian Air Quality Health Index from Environment Canada

About Canadian Air Quality Health Index from Environment Canada
This widget reports the Air Quality Health Index and forecast for various Canadian cities and provinces (information courtesy of Environment Canada).

The widget reports the health message for both at-risk populations (those with respiratory problems) and non-at-risk population.

The widget allows the user to set a threshold above which a notification appears on the desktop via Growl notifications (if that software is installed).