Enviornment Canada has issued Heat Warnings for Multiple Locations in BC. A stationary high pressure ridge is the source of the issue. To learn more go to

https://weather.gc.ca/warnings/report_e.html?bc46#1805012061633086632202208220502ww1171cwvr

https://www.emergencyinfobc.gov.bc.ca/heat-warning-multiple-locations-in-bc/