Millions Face High Temperatures as July Fourth Holiday Begins

Why it matters locally: Arizona is particularly susceptible to the widespread heatwave, as its climate already features consistently high temperatures. Residents and visitors across the state, including in Phoenix and Tucson, will need to take extra precautions during Fourth of July celebrations.

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Millions of people across the United States are currently experiencing significant heat and humidity. Temperatures have reached 38 degrees Celsius (100 degrees Fahrenheit) in affected areas. Forecasters anticipate these conditions will last for multiple days. The extended period of high temperatures coincides with the start of the July Fourth holiday. This weather pattern impacts residents and visitors planning activities during the long weekend.