The warm weather that dominated south-western Quebec since the beginning of the week has come to an end today with temperatures returning to normal value. Starting on Thursday, temperatures and humidity will progressively rise and culminate on Sunday, as they will be approaching the criteria for high heat and humidity, and possibly a heat wave. These weather conditions could make conditions uncomfortable and cause a gradual deterioration in air quality.
As mentioned in the weather forecasts since the beginning of the week, this mass of hot humid air will cover the western and south-western areas of Quebec. Environment Canada is closely monitoring the situation and will issue the appropriate warnings in a timely manner for concerned areas, as applicable. To better deal with the heat, it is recommended that you find air conditioned or shaded areas, drink a lot of water, and limit physical activity.
High heat and humidity are defined as a temperature of or above 30°C and a humidex, a combined value of temperature and humidity, of 40 (temperature felt). A heat wave is when the temperature reaches or exceeds 30° three days in a row.
A summer without surprise
Since the beginning of the summer season, the temperatures were generally above normal over the western part of the province, near normal in the center and below normal in the East. The highest temperature of 33.2 degrees was reached in Ste Clothilde, in Montérégie, on July 4th. The only heat wave occurred in La Tuque from July 2 to 4. In Montreal, temperatures were higher than 30 degrees only 3 days since the beginning of the summer.
For more information about Environment Canada’s Public Weather Warnings for Southern Quebec, please visit: www.weatheroffice.gc.ca/warnings/sqc_e.html
For more information about the daily air quality forecast and smog warnings, please visit :
www.qc.ec.gc.ca/atmos/smog/estival_e.html
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