WWCN11 CWTO 310843

YELLOW WARNING - HEAT

FOR SOUTHERN ONTARIO

UPDATED BY ENVIRONMENT CANADA

AT 4:43 A.M. EDT MONDAY 31 AUGUST 2026.

---------------------------------------------------------------------

YELLOW LEVEL WARNING - HEAT - FOR:

      WINDSOR - LEAMINGTON - ESSEX COUNTY.



---------------------------------------------------------------------

IMPACT LEVEL: MODERATE

FORECAST CONFIDENCE: HIGH



==DISCUSSION==



A HEAT EVENT IS EXPECTED TO BEGIN TODAY. 



WHAT: 

MAXIMUM TEMPERATURES OF 29 TO 31 DEGREES CELSIUS. 

MINIMUM TEMPERATURES OF 20 TO 22 DEGREES CELSIUS. 

HUMIDEX VALUES NEAR 38. 



WHEN: 

TODAY THROUGH WEDNESDAY, POSSIBLY LASTING INTO THURSDAY. 



ADDITIONAL INFORMATION: 

THE HEAT EVENT MAY CONTINUE INTO THURSDAY, ALTHOUGH CONFIDENCE IS 

LOW AT THIS STAGE.



FOR MORE INFORMATION: 



HTTPS://WWW.CANADA.CA/EN/HEALTH-CANADA/SERVICES/CLIMATE-CHANGE-HEALTH/EXTREME-HEAT/HOW-PROTECT-YOURSELF.HTML 



HTTPS://WWW.CANADA.CA/EN/HEALTH-CANADA/SERVICES/CLIMATE-CHANGE-HEALTH/EXTREME-HEAT/WHO-IS-AT-RISK.HTML 



PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY 

ENVIRONMENT CANADA. 



TO REPORT SEVERE WEATHER IN ONTARIO, SEND AN EMAIL TO 

ONSTORM(AT)EC.GC.CA OR POST REPORTS ON SOCIAL MEDIA USING 

(HASH)ONSTORM.



HTTP://WEATHER.GC.CA



END/OSPC