Where can I get local weather data on solar intensity or whatever (for Toronto)

I will soon be installing solar panels on my house and I am wondering if there is readily available data on the amount and intensity of sunshine that would correlate to daily potential solar energy production?

When I look at my weather data from Environment Canada I don't see any sort of data for sunshine, or whatever.

And what is the common measure for the amount of sunshine? Solar radiation, something else?

Occasionally you will see a UV factor but I think this is a daily maximum number that likely wouldn't be what I am looking for.

Thanks - so where do I see how much solar radiation there was in my city today? Shouldn't this be part of the regular meteorological data like temperatures, precipitation, wind speed, etc? I can't find it.

Thanks for the help guys but most of these sites tell you what the annual average solar production will be given the ratings of your panel. Very few of them give you data telling you what the solar intensity was today so that you can know in real-time, or near real-time, how much energy you should be producing. Why are temp, humidity, wind speed, etc all so available on a minute by minute basis but solar intensity (or whatever) is not. Shouldn't this be easy to determine using a photo cell of some sort? Or use a small, cheap PV cell and read the power output vs the rated power. Isn't that pretty simple to do? That might be what I end up doing by hooking up a small 12V cell to a Raspberry Pi with a digital voltmeter.

FYI - I finally found what I was looking for thanks to Woof's reply. The weather station at Dorset Park is close to my house and they have a solarradiation reading. And it only takes a few lines of Python code to read all of the parameters from the JSON file that you can get access to via the Wunderground API.