The NWS warning was in effect for regions of the Grand Canyon below 4,000 feet elevation. Temperatures were forecast to ...

After a 67-year-old hiker dies in the Grand Canyon, authorities warns of heat-related illness due to daytime temperatures in ...

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their ...

Climate change-fueled extreme heat will significantly increase the risk of heat-related illness for the millions of people who visit Grand Canyon National Park each year, a new National Park ...

On Friday morning, the NWS office in Flagstaff, Arizona, issued an extreme heat warning for Grand Canyon Village, North Rim and Supai. The warning is in effect for areas below 4,000 feet in elevation.