NDP Leader Rachel Notley says the numbers show some patients have to wait 20 hours or more in most of the province's major hospitals.
The government has set an eight-hour benchmark in a plan to improve health care.
Notley says despite the government making weight times a priority, the numbers are getting worse.
She says constant reorganization of health-care administration has left front-line staff confused and demoralized.
Health Minister Stephen Mandel has promised new beds will be opened to reduce bottlenecks that put pressure on emergency wards.