A heat dome is expected to bring extreme temperatures to the US south-west, affecting over 45 million people.
Daytime highs of 110-115F (43-46C) are forecast across the south-western US as a heat dome settles in through the end of August and into early September, according to the National Weather Service (NWS). The intense heat is expected to affect more than 45 million people, with limited cooling relief in the evenings and overnight. Experts predict that some record highs could be tied or broken this month, and the NWS has warned of the scorching late summer heat as a potential health hazard.
The NWS categorizes these temperatures as Extreme HeatRisk, a level dangerous to people without proper hydration and the capacity to cool down. A strong upper-level ridge will remain anchored across the south-west into south-central US, maintaining an abnormal hazardous heat across the region. Daytime highs of 100-110F are expected across the Southern Plains, while portions of the southwest will reach up to 115F. With overnight temperatures providing limited relief, heat-related illness may increase, especially for those without proper hydration and adequate cooling.
Why it matters
Extreme heat and wildfires threaten public health and infrastructure in the region.
This section reflects Dumpling editorial interpretation and is provided for context only.
What to watch
Watch for NWS updates on heat dome movement and potential record temperatures.
This section reflects Dumpling editorial interpretation and is provided for context only.