US heat wave kills 29+ during 250th anniversary weekend
Synopsis
America's 250th anniversary weekend turned deadly as a record-breaking heat wave killed more than two dozen people — at least 29 in New Jersey alone — shattered 148 temperature records, hospitalised dozens at National Mall celebrations, and forced the cancellation of Independence Day parades. New Jersey Governor Mikie Sherrill called it the hottest 14-year stretch in the country.
Key Takeaways
A US heat wave killed at least 29 people in New Jersey across 10 counties , with most victims found in homes without air conditioning.
Four deaths were recorded in Chicago and one in Hinds County, Mississippi — an 83-year-old woman who fell in her garden.
More than 20 states recorded temperatures of at least 37.8°C ; at least 148 daily high-temperature records were set between 30 June and 5 July .
Washington, D.C. logged its warmest-ever 4 July at 39.4°C ; Atlantic City tied its all-time high at 41.1°C .
The Great American State Fair on the National Mall was temporarily closed after 44 people were treated, including 11 hospitalised .
New Jersey Governor Mikie Sherrill called it 'the hottest stretch we've seen in over 14 years .'
A severe heat wave that blanketed much of the United States over the 4 July 2025 anniversary weekend claimed more than two dozen lives across the East Coast, Southeast, and Southwest, disrupting landmark national celebrations marking the country's 250th anniversary. The deadly event stands as one of the most consequential weather emergencies in recent American history.
Death Toll and Affected Regions
In New Jersey, at least 29 people are estimated to have died as a result of the heat, according to the state's Department of Health. The fatalities were spread across 10 counties, and officials noted that most victims were found in homes without air conditioning. New Jersey Health Commissioner Raynard Washington confirmed at a news conference on Saturday that the dead were not exclusively elderly — several younger adults were also among the victims.
In Chicago, four people died of heat-linked causes, according to records from the Cook County Medical Examiner's Office. In Mississippi, Hinds County officials confirmed that an 83-year-old woman died of heat exposure after falling in a garden near her home. In New York City, the multi-day event sent hundreds of residents to emergency rooms over the course of the week.
Record Temperatures Across the Country
More than 20 states recorded temperatures of at least 37.8 degrees Celsius, according to the FOX Forecast Center. At least 148 daily high-temperature records were set between 30 June and 5 July. Washington, D.C. recorded its warmest 4 July on record, with the mercury reaching 39.4 degrees Celsius. Philadelphia logged historic highs of 38.3 degrees Celsius or above for three consecutive days — the first time such a streak has been recorded since records began. Atlantic City tied its all-time highest temperature when the thermometer hit 41.1 degrees Celsius on Saturday.
Anniversary Celebrations Hit Hard
The Great American State Fair, a national exposition held on the National Mall as part of the 250th anniversary festivities, was temporarily shut down on Friday after emergency responders treated 44 people — including 11 hospitalised, many for heat-related illnesses and injuries, according to reports. Several other events, including an Independence Day parade in Washington, D.C., were cancelled due to the extreme conditions.
Official Warning and Context
New Jersey Governor Mikie Sherrill, speaking at the same news conference, described the severity in stark terms: 'Extreme heat is the number one weather-related killer in America, and this is the hottest stretch we've seen in over 14 years.' The warning underscores a broader pattern — heat emergencies have grown more frequent and more lethal across the US over the past decade, disproportionately affecting those without access to cooling infrastructure. As temperatures are forecast to remain elevated in parts of the country, public health authorities are urging residents to seek cooling centres and check on vulnerable neighbours.
Point of View
The very threat climate scientists have been flagging for decades. New Jersey's death toll of 29, largely among people without air conditioning, exposes a persistent infrastructure gap: cooling access in the US remains unequal, and heat mortality maps closely onto poverty maps. Governor Sherrill's '14-year hottest stretch' framing is notable — it signals that officials are no longer treating these events as anomalies. What mainstream coverage underplays is the compounding effect: cancelled celebrations, mass emergency room visits, and record-breaking temperatures across 20-plus states in a single weekend suggest this is no longer a regional story but a national public health emergency hiding in plain sight as a weather bulletin.
NationPress
7 Jul 2026
Frequently Asked Questions
How many people died in the US heat wave during the 250th anniversary weekend?
At least 29 people are estimated to have died in New Jersey alone, according to the state's Department of Health. Additional fatalities were confirmed in Chicago (4 deaths) and Mississippi (1 death), with the full national toll still being assessed.
Which areas recorded the highest temperatures during the heat wave?
Atlantic City tied its all-time temperature record at 41.1 degrees Celsius on Saturday. Washington, D.C. recorded its warmest-ever 4 July at 39.4 degrees Celsius, and Philadelphia logged temperatures of 38.3 degrees Celsius or higher for three consecutive days — a first in recorded history.
How did the heat wave affect the US 250th anniversary celebrations?
The Great American State Fair on the National Mall was temporarily shut down after 44 people required emergency treatment, including 11 who were hospitalised. An Independence Day parade in Washington, D.C. and several other events were cancelled due to the extreme heat.
Who were the victims of the New Jersey heat wave deaths?
According to Health Commissioner Raynard Washington, the victims were not limited to the elderly — younger adults were also among the dead. Most were found in homes without air conditioning, spread across 10 counties in the state.
How unusual was this heat wave historically?
New Jersey Governor Mikie Sherrill described it as 'the hottest stretch we've seen in over 14 years.' At least 148 daily high-temperature records were set across the country between 30 June and 5 July, with more than 20 states recording temperatures of at least 37.8 degrees Celsius.
