Environment Canada issued heat warnings across Alberta on Tuesday afternoon.

Several Alberta communities have been placed under a heat warning Monday as temperatures are expected to soar to 29 C or higher for the next two days. 

Calgary could break an all-time record for heat on Friday.

The temperature in Calgary is set to climb high enough on Wednesday that the city may break a 21-year-old weather record.

The ban will remain in effect until further notice.

Environment Canada said maximum daytime highs are forecast to be near 30 C in Calgary and in the low 30s in Lethbridge until the weekend.

A heat warning for Calgary from Environment Canada remains in place.

Environment Canada issued a heat warning for Calgary on Friday, suggesting the temperature will climb to at least 29 C over the next few days, with overnight temperatures reaching 14 C or greater.  

Environment Canada issues heat warnings when temperatures or humidity are expected to increase the risk of heat illnesses.