British Columbia set a new national September heat record with 40.8 C in Cache Creek, as wildfire smoke triggers widespread air-quality alerts. Multiple heat warnings remain in effect across the province.

Ashcroft, British Columbia hit 40.8 C (105 F) on Sept. 3, setting the hottest September temperature ever recorded in Canada. A regional weather observer called the late-season heat highly unusual and linked it to a blocking high-pressure system.

Air quality alerts remain in place for several areas in B.C.'s southern Interior on Tuesday as more than 200 wildfires continue to burn through hundreds of square kilometres of the province.

Warm temperatures prompting spring run-off combined with heavy rainfall in some areas caused devastating floods and mudslides in several parts of B.C.

The Yukon Fish and Game Association executive director believes it's just a matter of time before a disease outbreak, such as pneumonia, could spread from domestic sheep to wild Dall sheep.

B.C.'s wild bighorn sheep are facing a deadly threat from a pneumonia-causing bacterial disease

A bighorn sheep herd in B.C.’s interior is in trouble after coming into contact with domestic sheep and the contagious disease they carry.