Far be it for me to profess to be an expert on this, but from my reading of the Alaska forum you might be lucky to see it from central to northern Alaska, so maybe the answer might be in the Northwest Territories or Yukon from Edmonton.
The Northern Lights (aurora borealis) are an atmospheric phenomenon, and very hard to predict. Research has shown that the auroral activity is cyclic, and peaks about every 11 years. The next peak period is 2013.
While a more northern location will be of some help in seeing them, there is never any guarantee. Areas that are not subject to “light pollution” are the best.
The most often times to see the Aurora is from September to October and from March to April. Usually the best time of night (on clear nights) is midnight local time.
For more information;
Excellent links thank you very much for your help
I saw THE BEST northern lights show of my life while living in a small town only about 25 km outside of Edmonton. ( New Sarepta ) I've also seen them as far south as Nanton, but the ones outside of Redmonton beat anything I've seen in Rainbow lake , Anzac, etc... Maybe just a pure luck thing... who knows.
Thank you for taking the time to post in this thread.
When they occur, I can see the Northern Lights from my back deck & I live in the city although close to the outskirts. Best bet is to get out of the city to the north or east (I say east because that's the direction I often see them in) and of course the further north you go the better. It's a pretty hit & miss thing with no real way to predict when they will occur. I wouldn't say seeing them is rare but it certainly isn't a nightly or regular happening.
Due to the great responses above, I apologise for my first reply to your question. This certainly shows that I should limit myself to actual knowledge, and not an assumed situation.
(Insert red face here)
Elk Island National Park is located about 45 minutes east of Edmonton on highway 16. It has been designated a dark sky preserve, meaning that measures have been taken to minimize the light pollution within the park. It would be the best location near Edmonton to try and catch the northen lights (although, as previous posters have said they are highly unpredictable).