Red Deer and region are under both a heat warning and severe thunderstorm watch.
Temperatures reaching or exceeding 29 C, combined with overnight lows near 14, will continue today, says Environment Canada.
Temperatures will moderate to near seasonal values by Friday.
Residents are encouraged to consider rescheduling outdoor activities to cooler hours of the day.
Conditions are also favourable for the development of dangerous thunderstorms this afternoon that may be capable of producing strong wind gusts, damaging hail and heavy rain, says the agency.
“Very large hail can damage property, break windows, dent vehicles and cause serious injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles.
“Remember, severe thunderstorms can produce tornadoes. Heavy downpours can cause flash floods and water pooling on roads. Lightning kills and injures Canadians every year.”