Updated: July 27, 2026, 9:26 p.m. PDT. Conditions can change quickly. Environment Canada showed no weather alerts in effect for Vancouver, Burnaby and New Westminster at this check.
At 4:13 a.m., a phone showed Vancouver at 21°C, with a high of 25°C and a low of 20°C. Just below the forecast sat a yellow heat warning and another alert for air quality. The obvious question was: since when does 25°C count as a heat warning?
The phone was not wrong, but its single-city temperature did not show the full area or criteria behind the official warning. Environment and Climate Change Canada issued a yellow heat warning for Metro Vancouver on July 22. Inland sections were forecast to reach the low to mid-30s, while western neighbourhoods near the water were expected to stay in the high 20s. Overnight lows across the region were only expected to fall into the mid to high teens. A 25°C reading for Vancouver’s more coastal forecast did not represent Burnaby, New Westminster or hotter inland communities.
A yellow warning is not based on one afternoon high alone. HealthLink BC says it signals unusually hot temperatures lasting at least two days. People without access to a cool indoor space face greater risk, especially older adults, people who live alone, infants, pregnant people and those with chronic health conditions. Warm nights matter because homes and bodies get less time to cool down.
The screenshot also captured a second issue: an air-quality warning. On July 22, hot sunny weather, local emissions and wildfire smoke raised ground-level ozone and fine particulate matter across parts of Metro Vancouver. When heat and smoke arrive together, opening a window is not always the right answer; check current air quality first. Our wildfire smoke and AQHI guide explains the Canadian scale.
- Drink water before you feel thirsty and keep blinds or curtains closed during the day.
- Open windows only when the air outside is cooler and the air quality is acceptable.
- Move running, cycling and other strenuous outdoor activity to early morning or evening.
- Check on people who live alone or do not have air conditioning, and use a public cooling space if home becomes too hot.
During the warning, the City of Vancouver activated cooling centres at community centres and libraries, along with more than 300 drinking-water locations and 30 misting stations. The City noted that indoor temperatures above 26°C can be dangerous for some people, while more than brief exposure above 31°C can be dangerous for most.
The status had changed by the time this article was updated. At 5:38 p.m. on July 24, Environment Canada’s central Metro Vancouver alert page showed no alerts in effect. The screenshot therefore documents a real warning from the early hours of July 23, not a warning that remained active.
If you are planning a seawall walk, park visit or outdoor attraction, start with our Vancouver guide and move ideas from the free Vancouver attractions guide to cooler hours. The useful lesson in this 4:13 a.m. screenshot is not that Vancouver suddenly reached 40°C. It is that a regional warning, warm overnight temperatures and air quality often tell you more than the single high on a phone’s home screen.
For practical trip planning, compare current conditions with the Vancouver events guide and the Canada life guide. The end of one warning does not rule out another hot spell later in the summer.
For practical trip planning, compare current conditions with the Vancouver events guide and the Canada life guide. The end of one warning does not rule out another hot spell later in the summer.
For practical trip planning, compare current conditions with the Vancouver events guide and the Canada life guide. The end of one warning does not rule out another hot spell later in the summer.
Sources checked: Environment and Climate Change Canada, City of Vancouver and HealthLink BC. Image supplied by a Let’s Canada reader on July 23, 2026; it may not be reused as a separate commercial asset.
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