The active weather remains north along the ridge, so not much rain is in the forecast for southern Ontario as we head into Monday.

We are tracking a cold front that is expected to sweep through on Tuesday. It will likely bring the risk of thunderstorms across southern Ontario before the cold front passes through Tuesday evening.

WATCH: Multi-day extreme heat event has residents seeking relief

Cities break heat records, with more to come

We’ve already seen temperatures and humidity increase to dangerously high levels as the ridge of high pressure intensified Sunday.

At its highest, Toronto broke its record humidity for June, jumping to 46.3, 0.7 points higher than its former all-time peak on June 30th, 2018.

It was the same with Hamilton, which saw the humidex jump by 2.3 points higher than its peak from June of 2018, reaching 46.6. Downtown Hamilton was also the country’s hotspot on Sunday, with air temperatures reaching 35.3°C.

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Toronto and Hamilton weren’t the only ones heating up; Burlington had a high of 34°C with a humidex of 44. Sarnia was sitting at 33.9°C, feeling like 46, and Peterborough had the biggest gap, with temperatures reaching 31.7°C but feeling like 45.