2026 North American heat wave
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Starting in late June 2026, North America has been struck by an extreme heatwave, with temperature records expected to be broken in the coming days.[1] Nearly half of the United States, 180 million people, are currently under a "major" or "extreme" heat risk by the National Weather Service.[2] Temperatures are expected to reach between 100–110 °F (38–43 °C) in many areas.[3] In Canada, Ontario and Quebec were under "orange" or "yellow" heat warnings, with temperatures expected to reach upwards of 37 °C (99 °F) in some areas.[4][5]
Weather forecast for July 2, showing extreme high temperatures in many areas of the Eastern United States | |
| Type | Heatwave |
|---|---|
| Areas | United States |
| Start date | June 28, 2026 |
| End date | Ongoing |
This heatwave is concurrent with the FIFA World Cup, United States' Independence Day, and Canada Day, resulting in participants having to take shade and hydrate frequently.[6][7] For the first time, FIFA has mandated "cooling breaks" for its players, halfway through each half.[8]
Background
On June 11 the United States National Weather Service found El Niño conditions were present, with the possibility of a "Super El Niño" as the year goes on. Climate scientists predict that with these El Niño conditions, there would be higher temperatures and more of a likelihood of heat waves.[9][10] El Niño and human-caused climate change both contribute to the increased severity of heat waves.[11]
United States
On Monday, June 29, the heat index measured at O'Hare International Airport in Chicago, Illinois was 101 °F (38 °C).[12] On July 2, ambient temperatures in New York City exceeded 100 °F (38 °C) for the first time since 2012.[13] Boston also reached 100 °F (38 °C) that day, setting a new daily high temperature record and marking the 29th time the city reached the century mark.[14] Amtrak reduced speeds for trains in the Northeast Corridor due to the extreme heat, and several trains were cancelled as well.[15] SEPTA and NJ Transit also faced delays and cancellations due to the heat.[16]
See also
- 2026 European heatwaves – co-occurring heatwave