By John Q. Hosedrinker 
Environment and Climate Change Canada (ECCC) has linked several extreme heat waves in 2025 to human-caused climate change, similar to findings from the prior year. This connection was established using a new rapid extreme weather event attribution system that compares current climate data to pre-industrial conditions. The system analyzes recorded greenhouse gas levels and human activities to determine the impact of climate change on the likelihood of extreme weather events. In reviewing 10 of the hottest heat waves from July and August, the system concluded that nine were made “much more likely” due to climate change.
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Canada heat waves in 2025 tied to human-driven climate change are unfortunately, not surprising. Seeing the late-season warmth in October, like the mid-80s temperatures mentioned, certainly feels unusual. It’s the kind of weather that makes you question what’s “normal” anymore, especially when compared to historical averages, or even just a few years ago. The comments about shorts and t-shirts in mid-October really drive this point home.
The connection between these heat waves and human-driven climate change feels undeniable, even if some people are still skeptical. Remember the unusually pleasant summer of 2020, with the pandemic lockdowns and cleaner air? It’s a stark contrast to the extreme heat waves of 2021 that left air conditioners struggling. Those of us in Canada have seen the shifting weather patterns up close.
It’s true, though, that some people deny the reality of climate change. Comments about “cooling patterns” and claims that this is all normal are common. And let’s be honest, hearing these opinions from some who are not well-informed, or from those who may have a vested interest in denying the problem, can be frustrating. It’s easy to dismiss the science when you don’t understand it, or if the message doesn’t align with your beliefs.
However, the evidence is stacking up. While there may be disagreement on the exact figures or the “how” of it all, a growing number of people are starting to feel the impact of climate change. The unusually warm temperatures in October, the shifting seasons, and the increasing frequency of extreme weather events are all strong indicators. There may be other factors at play, but the general consensus is that the planet is warming due to human activities.
The idea that some people are contributing less than others to climate change, like the comment about taking the bus and eating Ramen noodles, is something to think about. While individual actions like these may have a smaller impact, systemic change is required to truly address the issue.
The argument that certain governments banning the research and publication of climate change studies doesn’t help. How can we possibly hope to understand the problem if we are prevented from studying it openly and honestly? Suppression of scientific data is a very troubling trend, and the potential consequences for the entire world are significant. It reminds me of the ozone scare back in the 80s – people seem to have forgotten what can happen when we ignore environmental problems.
For those who still question the reality of climate change, the financial impact is a key factor. The Canadian Climate Institute’s report estimates that Canada could face annual losses to its real GDP of $35 billion by 2030 due to climate change. As these events intensify, the losses will likely increase, creating a growing financial burden. This isn’t just an environmental issue; it’s an economic one.
The examples of extreme heat in places like northern Illinois and the unusual appearance of the trees in southern Ontario further emphasize the widespread nature of these changes. Seeing trees still green and confused about the season really makes this situation feel all the more unusual. This isn’t just about specific regions; it’s a global phenomenon with local impacts.
The record-breaking temperatures are another critical piece of the puzzle. The fact that many province-wide records still date back to the early 1900s may provide some comfort. However, these records may not hold for long. The comment about many of the “highest temperature ever recorded” spots being filled recently indicates that we are indeed witnessing a shift. The early warning to act on climate change was really in the 80’s.
Ultimately, the link between the heat waves in Canada in 2025 and human-driven climate change is becoming increasingly clear. The scientific consensus is strong, and the evidence is visible in our daily lives. We need to have more meaningful conversations about this issue, from all perspectives, in order to understand the complexities.