Last month was the first time in three years the Fort Saskatchewan area saw temperatures reach 30 C or higher for two days in a row.
With Environment Canada forecasting daytime highs at or above 30 C for Wednesday through Friday, this week could be even hotter, and potentially record-breaking.
According to John Paul Cragg, warning preparedness meteorologist with the weather agency, Albertans can thank a build-up of warm air for the recently issued heat warning.
“What we have is an area of high pressure sitting over the Prairie provinces allowing the warm air at the ground to build up over the course of this week,” Cragg said. “It's a pretty stagnant air mass without much of a flow."
Sunset won’t bring much of a break from the heat. Overnight lows will stay in the high teens till Friday.
“And that's one of the reasons why we have the heat warning out. So it's not just the warm temperatures during the day but it's also warm temperatures sticking around overnight as well, creating an extended period of heat," Cragg said.
Environment Canada is predicting a high of 34 C for Thursday and 36 C for Friday.
The hottest August day on record in the Edmonton area happened on August 18, 2008, when the temperature climbed to 35.6 degrees.
Environment Canada reminds people to be cautious in the extreme heat by rescheduling outdoor activities to cooler times of day, spending time inside cooled buildings, drinking plenty of water and not leaving people or pets inside closed vehicles for any length of time.
A special air quality advisory, from wildfires, is also in effect.