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The National Weather Service has warned of "searing heat and oppressive humidity that occurs during the 'dog days of summer'.
CNN is tracking extreme heat conditions for Americans each day. See where the risks are greatest — and where high temperature records might be broken.
Here's everything you need to know about the heat wave. 'Rare' and 'dangerous': Record-smashing heat wave to scorch tens of millions. National heat index map: See which states feel hottest.
An intense heat wave is affecting nearly half of the US population, with temperatures reaching 36–39.4 °C (97–103 °F) and heat indices up to 43.3 °C (110 °F) in major cities.
Extreme heat is impacting states across the country. ... Extreme heat hits the US: See map of impacted states. Julia Gomez, USA TODAY. Mon, June 23, 2025 at 6:20 PM UTC. 4 min read.
Extreme heat is impacting states across the country. ... Extreme heat hits the US: See map of impacted states. Julia Gomez, USA TODAY. Updated June 23, 2025 at 2:20 PM. Copied; ...
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