United States faces widespread heat dome emergency
PUBLISHED Jul 25, 2026, 7:01 AM ET
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A large heat dome over the United States is driving triple-digit temperatures and high humidity across the Midwest, Mid-Atlantic and Eastern seaboard, with the National Weather Service issuing extensive heat advisories and excessive heat warnings affecting tens of millions. Major cities including Chicago, Washington D.C., Philadelphia and New York are reporting heat index values above 105 to 115 degrees Fahrenheit, leading authorities to open cooling centers and implement public health contingency plans. At the same time, wildfire smoke from unprecedented northern forest fires is degrading air quality, while 19 state attorneys general and major cities sue the EPA over greenhouse gas rollbacks.
By Emily Rhodes | JQJO News
Timeline of Events
- Recent weeks Prolonged dry spells intensify wildfire risk
- Recent weeks Northern forest fires become unprecedented
- This week Heat dome settles over central United States
- This week Triple-digit temperatures hit major cities
- This week National Weather Service issues widespread alerts
- This week Wildfire smoke drifts south, degrades air
- Today Cities open cooling centers, health plans
- Today States and cities file federal EPA lawsuit
News Intelligence
- The heat dome and wildfire smoke are health hazards. High temperatures can lead to heatstroke, while poor air quality affects breathing. If you're in an affected area, stay hydrated, limit outdoor activities, and use air conditioning if possible. Check on elderly neighbors who may struggle with the heat.
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