More than 70 million Americans sweated through the muggiest first two months of summer on record as climate change has noticeably dialed up the Eastern United States' humidity in recent decades, an Associated Press data analysis shows.
And that meant uncomfortably warm and potentially dangerous nights in many cities the last several weeks, the National Weather Service said.
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FILE - A woman uses a portable fan to cool down June 25, 2025, outside the U.S. Capitol in Washington. (AP Photo/Julia Demaree Nikhinson, File)
FILE - Visitors use brochures to shield themselves from the sun as they walk near the U.S. Capitol on an unseasonably hot day, June 24, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)
FILE - A fruit vendor pushes her cart on the Brooklyn Bridge during a heat wave on June 24, 2025, in New York. (AP Photo/Olga Fedorova, File)
FILE - Asher Gillen, 3, uses a battery-powered fan while holding a cup of ice to cool off during hot weather before a baseball game between the Baltimore Orioles and the Texas Rangers, June 23, 2025, in Baltimore. (AP Photo/Stephanie Scarbrough, File)
FILE - Sweat shows through the shirt of a cyclist pedaling up a hill July 23, 2025, in St. Louis. (AP Photo/Jeff Roberson, File)
FILE - Paul Williams cools off in water while taking a break from yard work in Richardson, Texas, July 31, 2025. (AP Photo/LM Otero, File)
Parts of 27 states and Washington, D.C., had a record amount of days that meteorologists call uncomfortable — with average daily dew points of 65 degrees Fahrenheit or higher — in June and July, according to data derived from the Copernicus Climate Service.
And that's just the daily average. In much of the East, the mugginess kept rising to near tropical levels for a few humid hours. Philadelphia had 29 days, Washington had 27 days and Baltimore had 24 days where the highest dew point simmered to at least 75 degrees, which even the the weather service office in Tampa calls oppressive, according to weather service data.
Dew point is a measure of moisture in the air expressed in degrees that many meteorologists call the most accurate way to describe humidity. The summer of 2025 so far has had dew points that average at least 6 degrees higher than the 1951-2020 normals in Washington, Baltimore, Pittsburgh, Richmond, Columbus and St. Louis, the AP calculations show. The average June and July humidity for the entire country east of the Rockies rose to more than 66 degrees, higher than any year since measurements started in 1950.
“This has been a very muggy summer. The humid heat has been way up,” said Bernadette Woods Placky, chief meteorologist at Climate Central.
Twice this summer climate scientist and humidity expert Cameron Lee of Kent State University measured dew points of about 82 degrees at his home weather station in Ohio. That's off the various charts that the weather service uses to describe what dew points feel like.
“There are parts of the United States that are experiencing not only greater average humidity, especially in the spring and summer, but also more extreme humid days,” Lee said. He said super sticky days are now stretching out over more days and more land.
High humidity doesn't allow the air to cool at night as much as it usually does, and the stickiness contributed to multiple nighttime temperature records from the Ohio Valley through the Mid-Atlantic and up and down coastal states, said Zack Taylor, forecast operations chief at the National Weather Service's Weather Prediction Center. Raleigh, Charlotte, Nashville, Virginia Beach, Va., and Wilmington, N.C., all reached records for the hottest overnight lows. New York City, Columbus, Atlanta, Richmond, Knoxville, Tennessee and Concord, New Hampshire came close, he said.
“What really impacts the body is that nighttime temperature,” Taylor said. “So if there’s no cooling at night or if there’s a lack of cooling it doesn’t allow your body to cool off and recover from what was probably a really hot afternoon. And so when you start seeing that over several days, that can really wear out the body, especially of course if you don’t have access to cooling centers or air conditioning.”
An extra hot and rainy summer weather pattern is combining with climate change from the burning of coal, oil and natural gas, Woods Placky said.
The area east of the Rockies has on average gained about 2.5 degrees in summer dew point since 1950, the AP analysis of Copernicus data shows. In the 1950s, 1960s, 1970s, 1980s and part of the 1990s, the eastern half of the country had an average dew point in the low 60s, what the weather service calls noticeable but OK. In four of the last six years that number has been near and even over the uncomfortable line of 65.
“It's huge,” Lee said of the 75-year trend. “This is showing a massive increase over a relatively short period of time.”
That seemingly small increase in average dew points really means the worst ultra-sticky days that used to happen once a year, now happen several times a summer, which is what affects people, Lee said.
Higher humidity and heat feed on each other. A basic law of physics is that the atmosphere holds an extra 4% more water for every degree Fahrenheit (7% for every degree Celsius) warmer it gets, meteorologists said.
For most of the summer, the Midwest and East were stuck under either incredibly hot high pressure systems, which boosted temperatures, or getting heavy and persistent rain in amounts much higher than average, Taylor said. What was mostly missing was the occasional cool front that pushes out the most oppressive heat and humidity. That finally came in August and brought relief, he said.
Humidity varies by region. The West is much drier. The South gets more 65-degree dew points in the summer than the North. But that's changing.
University of Georgia meteorology professor Marshall Shepherd said uncomfortable humidity is moving further north, into places where people are less used to it.
Summers now, he said, “are not your grandparents’ summers.”
Borenstein reported from Washington and Wildeman reported from Hartford, Connecticut.
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FILE - A woman uses a portable fan to cool down June 25, 2025, outside the U.S. Capitol in Washington. (AP Photo/Julia Demaree Nikhinson, File)
FILE - Visitors use brochures to shield themselves from the sun as they walk near the U.S. Capitol on an unseasonably hot day, June 24, 2025, in Washington. (AP Photo/Mark Schiefelbein, File)
FILE - A fruit vendor pushes her cart on the Brooklyn Bridge during a heat wave on June 24, 2025, in New York. (AP Photo/Olga Fedorova, File)
FILE - Asher Gillen, 3, uses a battery-powered fan while holding a cup of ice to cool off during hot weather before a baseball game between the Baltimore Orioles and the Texas Rangers, June 23, 2025, in Baltimore. (AP Photo/Stephanie Scarbrough, File)
FILE - Sweat shows through the shirt of a cyclist pedaling up a hill July 23, 2025, in St. Louis. (AP Photo/Jeff Roberson, File)
FILE - Paul Williams cools off in water while taking a break from yard work in Richardson, Texas, July 31, 2025. (AP Photo/LM Otero, File)
The U.N. Security Council scheduled an emergency meeting Thursday to discuss Iran's deadly protests at the request of the United States, even as President Donald Trump left unclear what actions he would take against the Islamic Republic.
Tehran appeared to make conciliatory statements in an effort to defuse the situation after Trump threatened to take action to stop further killing of protesters, including the execution of anyone detained in Tehran’s bloody crackdown on nationwide protests.
White House press secretary Karoline Leavitt said, “All options remain on the table for the president.”
Iran’s crackdown on the demonstrations has killed at least 2,615, the U.S.-based Human Rights Activists News Agency reported. The death toll exceeds any other round of protest or unrest in Iran in decades and recalls the chaos surrounding the country’s 1979 Islamic Revolution.
The sound of gunfire faded Thursday in the capital, Tehran. The country closed its airspace to commercial flights for hours without explanation early Thursday and some personnel at a key U.S. military base in Qatar were advised to evacuate. The U.S. Embassy in Kuwait also ordered its personnel to “temporary halt” travel to the multiple military bases in the small Gulf Arab country.
Here is the latest:
Masih Alinejad, one of the most vocal Iranian dissidents in the U.S., accused the United Nations and the Security Council of failing “to respond with the urgency this moment demands” at the emergency U.N. Security Council meeting Thursday.
In October, two purported Russian mobsters were each sentenced to 25 years behind bars for hiring a hitman to kill Alinejad at her Brooklyn home on behalf of the Iranian government.
Sitting across the table from the Iranian ambassador to the U.N., Alinejad, who came after an invitation from the U.S., said that “the members of this body have forgotten the privilege and responsibility of sitting in this room.”
Ahead of the emergency U.N. Security Council meeting Thursday, Iranian Foreign Minister Abbas Araghchi and Secretary-General António Guterres
spoke by phone to discuss the recent deadly protests and Iran’s request for the world body to do more to condemn what they call foreign influence in the Islamic Republic, according to a readout of the call posted on Iranian state TV.
The semiofficial Tasnim news agency reported that Araghchi implored the top U.N. official to live up to the “serious expectation” that Iran’s government and its people have of the U.N.s’ role in condemning what the officials called “illegal U.S. interventions against Iran.”
White House press secretary Karoline Leavitt said that U.S. President Donald Trump and his team had communicated to Iranian officials that there would be “grave consequences” if killing continues against protesters in Iran.
“The president understands today that 800 executions that were scheduled and supposed to take place yesterday, were halted,” she said.
But Trump continues closely watching the situation, she said.
“All options remain on the table for the president,” Leavitt said.
Abdul Malik al-Houthi, leader of the Iran-backed Yemeni rebel group, said on Thursday that “criminal gangs” were responsible for the situation in Iran, accusing them of carrying out an “American-Israeli” scheme.
“Criminal gangs in Iran killed Iranian citizens, security forces and burned mosques,” he said without providing evidence. “What’s being committed by criminal gangs in Iran is horrific, bearing an American stamp as it includes slaughter and burning some people alive.”
He also said that the U.S. imposed economic sanctions on Iran to create a crisis leading to the current issues in the country with the end goal of controlling Iran.
Yet he said the U.S. has “failed in Iran” and that Iranians “will not yield to America.”
The president of the European Union’s executive arm says the 27-member bloc is looking to strengthen sanctions against Iran as ordinary Iranians continue their protests against Iran’s theocratic government.
Commission President Ursula von der Leyen said Thursday following a meeting of the EU’s commissioners in Limassol, Cyprus that current sanctions against Iran are “weakening the regime.”
Von der Leyen said that the EU is looking to sanction individual Iranians —apart from those who belong to Iran’s Islamic Revolutionary Guard — who “are responsible for the atrocities.”
She added that the people of Iran who are “bravely fighting for a change” have the EU’s “full political support.”
Canada’s foreign minister says a Canadian citizen has died in Iran “at the hands of the Iranian authorities.”
“Peaceful protests by the Iranian people — asking that their voices be heard in the face of the Iranian regime’s repression and ongoing human rights violations — has led the regime to flagrantly disregard human life,” Canadian Foreign Affairs Minister Anita Anand posted on social media Thursday.
“This violence must end. Canada condemns and calls for an immediate end to the Iranian regime’s violence,” she added.
Anand said consular officials are in contact with the victim’s family in Canada. She did not provide details.
The International Federation of Red Cross and Red Crescent Societies announced Thursday that a local staff member was killed and several others were wounded during the deadly protests in Iran over the weekend.
Amir Ali Latifi, an Iranian Red Crescent Society worker, was working in the country’s Gillan province on Jan. 10 when he was killed “in the line of duty,” the organization said in a statement.
“The IFRC is deeply concerned about the consequences of the ongoing unrest on the people of Iran and is closely monitoring the situation in coordination with the Iranian Red Crescent Society,” the statement continued.
U.S. President Donald Trump has hailed as “good news” reports that the death sentence has been lifted for an Iranian shopkeeper arrested in a violent crackdown on protests.
Relatives of 26-year-old Erfan Soltani had said he faced imminent execution.
Trump posed Thursday on his Truth Social site: “FoxNews: ‘Iranian protester will no longer be sentenced to death after President Trump’s warnings. Likewise others.’ This is good news. Hopefully, it will continue!”
Iranian state media denied Soltani had been condemned to death. Iranian judicial authorities said Soltani was being held in a detention facility outside of the capital. Alongside other protesters, he has been accused of “propaganda activities against the regime,” state media said.
Trump sent tensions soaring this week by pledging that “help is on its way” to Iranian protesters and urging them to continue demonstrating against authorities in the Islamic Republic.
On Wednesday Trump signaled a possible de-escalation, saying he had been told that “the killing in Iran is stopping.”
In a joint statement, the foreign ministers of Canada, France, Germany, Italy, Japan, the United Kingdom, the United States and the European Union’s main foreign policy chief said the G7 members were “gravely concerned” by the developments surrounding the protests, and that they “strongly oppose the intensification of the Iranian authorities’ brutal repression of the Iranian people.”
The statement, published on the EU’s website Thursday, said the G7 were “deeply alarmed at the high level of reported deaths and injuries” and condemned “the deliberate use of violence” by Iranian security forces against protesters.
The G7 members “remain prepared to impose additional restrictive measures if Iran continues to crack down on protests and dissent in violation of international human rights obligations,” the statement said.
China’s Foreign Minister Wang Yi has spoken with his counterpart in Iran, who said the situation was “now stable,” China’s Ministry of Foreign Affairs said.
Abbas Araghchi said “he hoped China will play a greater role in regional peace and stability” during the talks, according to the statement from the ministry.
“China opposes imposing its will on other countries, and opposes a return to the ‘law of the jungle’,” Wang said.
“China believes that the Iranian government and people will unite, overcome difficulties, maintain national stability, and safeguard their legitimate rights and interests,” he added. “China hopes all parties will cherish peace, exercise restraint, and resolve differences through dialogue. China is willing to play a constructive role in this regard.”
“We are against military intervention in Iran,” Turkish Foreign Minister Hakan Fidan told journalists in Istanbul on Thursday. “Iran must address its own internal problems… They must address their problems with the region and in global terms through diplomacy so that certain structural problems that cause economic problems can be addressed.”
Ankara and Tehran enjoy warm relations despite often holding divergent interests in the region.
Fidan said the unrest in Iran was rooted in economic conditions caused by sanctions, rather than ideological opposition to the government.
Iranians have been largely absent from an annual pilgrimage to Baghdad, Iraq, to commemorate the death of Imam Musa al-Kadhim, one of the twelve Shiite imams.
Many Iranian pilgrims typically make the journey every year for the annual religious rituals.
Streets across Baghdad were crowded with pilgrims Thursday. Most had arrived on foot from central and southern provinces of Iraq, heading toward the shrine of Imam al-Kadhim in the Kadhimiya district in northern Baghdad,
Adel Zaidan, who owns a hotel near the shrine, said the number of Iranian visitors this year compared to previous years was very small. Other residents agreed.
“This visit is different from previous ones. It lacks the large numbers of Iranian pilgrims, especially in terms of providing food and accommodation,” said Haider Al-Obaidi.
Europe’s largest airline group said Thursday it would halt night flights to and from Tel Aviv and Jordan's capital Amman for five days, citing security concerns as fears grow that unrest in Iran could spiral into wider regional violence.
Lufthansa — which operates Swiss, Austrian Airlines, Brussels Airlines and Eurowings — said flights would run only during daytime hours from Thursday through Monday “due to the current situation in the Middle East.” It said the change would ensure its staff — which includes unionized cabin crews and pilots -- would not be required to stay overnight in the region.
The airline group also said its planes would bypass Iranian and Iraqi airspace, key corridors for air travel between the Middle East and Asia.
Iran closed its airspace to commercial flights for several hours early Thursday without explanation.
A spokesperson for Israel’s Airport Authority, which oversees Tel Aviv’s Ben Gurion Airport, said the airport was operating as usual.
Iranian state media has denied claims that a young man arrested during Iran’s recent protests was condemned to death. The statement from Iran’s judicial authorities on Thursday contradicted what it said were “opposition media abroad” which claimed the young man had been quickly sentenced to death during a violent crackdown on anti-government protests in the country.
State television didn’t immediately give any details beyond his name, Erfan Soltani. Iranian judicial authorities said Soltani was being held in a detention facility outside of the capital. Alongside other protesters, he has been accused of “propaganda activities against the regime,” state media said.
New Zealand’s Foreign Minister Winston Peters said Thursday that his government was “appalled by the escalation of violence and repression” in Iran.
“We condemn the brutal crackdown being carried out by Iran’s security forces, including the killing of protesters,” Peters posted on X.
“Iranians have the right to peaceful protest, freedom of expression, and access to information – and that right is currently being brutally repressed,” he said.
Peters said his government had expressed serious concerns to the Iranian Embassy in Wellington.
Women cross an intersection in downtown Tehran, Iran, Thursday, Jan. 15, 2026. (AP Photo/Vahid Salemi)
A demonstrator lights a cigarette with a burning poster depicting Supreme Leader Ayatollah Ali Khamenei during a rally in support of Iran's anti-government protests, in Holon, Israel, Wednesday, Jan. 14, 2026. (AP Photo/Ohad Zwigenberg)
Protesters participate in a demonstration in support of the nationwide mass protests in Iran against the government, in Berlin, Germany, Wednesday, Jan. 14, 2026. (AP Photo/Ebrahim Noroozi)
Protesters participate in a demonstration in support of the nationwide mass protests in Iran against the government, in Berlin, Germany, Wednesday, Jan. 14, 2026. (AP Photo/Ebrahim Noroozi)
