Extreme US Heatwave Engulfs 200 Million

The heat dome is trapping hot air over much of the country, with some areas expected to see temperatures soar above 100°F. Officials have issued excessive heat warnings and advisories, urging residents to stay indoors and hydrate.

Power grid operators are bracing for record demand as air conditioning use spikes.

The extreme weather comes as the US prepares to celebrate Independence Day, with outdoor events potentially posing health risks.