'Feelin' hot, hot, hot': Half of all Americans under heat advisories this July Fourth holiday

The video discusses a severe heat wave affecting over 150 million people across more than 20 US states. The National Weather Service has issued warnings about the potential health risks and infrastructure strain. The heat wave is expected to last several days, with temperatures reaching up to 120°F in some areas. The video highlights the geographical spread of the heat, including unusual heat in places like San Francisco. The National Weather Service warns of a potentially historic and deadly heat event, with risks of wildfires exacerbated by dry conditions. Fireworks regulations are emphasized due to the 4th of July celebrations.

What specific temperatures are being reported in California during this heat wave?

What are the concerns regarding fireworks during the heat wave, especially on the 4th of July?