PHILADELPHIA — Americans dipped into the water, went to the movies and rode the subway just to be in air conditioning Saturday for relief from unrelenting heat that has killed 30 people across half the country.

The heat sent temperatures soaring over 100 degrees in several cities, including a record 105 in Washington, St. Louis (106), and Indianapolis (104), buckled highways and derailed a Washington-area train even as another round of summer storms threatened.

If people ventured outside to do anything, they did it early. But even then, the heat was stifling.

"It was baking on the 18th green," said golfer Zeb Rogerson, who teed off at 6 a.m. at an Alexandria, Va., golf course but was sweltering by the end of his round.

The heat sent temperatures soaring in more than 20 states to 105 in Louisville, Ky., 101 in Philadelphia, and 95 in New York; besides Washington, a record of 104 was set in Sioux Falls, S.D., and Baltimore set a record at 102.

At least 30 deaths were blamed on the heat, including nine in Maryland and 10 in Chicago, mostly among the elderly. Three elderly people found dead in their houses in Ohio had heart disease, but died of high temperatures in homes lacking power because of recent outages, officials said. Heat was also cited as a factor in three deaths in Wisconsin, two in Tennessee and three in Pennsylvania.

Officials said the heat caused highways to buckle in Illinois and Wisconsin. In Maryland, investigators said heat likely caused rails to kink and led a green line Metro train to partially derail in Prince George's County on Friday afternoon. No one was injured, and 55 passengers were safely evacuated.

Thousands of mid-Atlantic residents remained without power more than a week after deadly summer storms and extreme heat struck the area, including 120,000 in West Virginia and some 8,000 in the suburbs around Baltimore and Washington, D.C. In the Washington area, Pepco asked customers to conserve power, saying the heat was stressing the system.

"This is becoming a black swan of heat waves, in the sense that it's such a long heat wave, such a severe heat wave and encompassing such a large area," said Chris Vaccaro, spokesman for the National Oceanic and Atmospheric Administration.

At the Smithsonian's National Museum of Natural History, Abraham Lewis and his wife, Dzifa Fianoo of Lorton, Va., brought their 8-week-old son out for a walk in the 100-degree heat.

"I really don't want to be out, but she's a new mother and was feeling cooped up," Lewis said. "Do you see how hot it is?" he said, wiping beads of sweat from his forehead more than once.

The couple's home in northern Virginia lost power for two days last week after a severe wind storm swept through. Fianoo had to haul the family's food to a cousin's house to prevent it from spoiling, then took it home again.

Micah Straight, 36, brought his three daughters to dance in jets of water spurting from a "sprayground" near Philadelphia's Logan Square fountain to cool off.

"We got here early, because I don't think we'll be out this afternoon – we'll be in the air conditioning," he said. "So I wanted to get them out, get some sunshine, get tired."

In South Bend, Ind., serious kayakers Saturday took to the East Race Waterway, a 1,900-foot long manmade whitewater course near downtown.

"A lot of times I'll roll over just to cool off," said Robert Henry of Carmel, just north of Indianapolis. "The biggest challenge is walking coming back up carrying a kayak three-eighths of a mile in this heat."

In Manhattan, customers who stepped in to see "Jiro Dreams of Sushi" at an IFC movie theater were there for more than entertainment.

"Of course we came to cool off!" said John Villanova, a writer who was on his second sweaty T-shirt of the day – expecting to change again by evening.

He said that earlier, he rode a Manhattan subway back and forth for a half an hour, with no destination in mind, "because it really keeps you cool."

In cities around the Midwest and Mid-Atlantic region, people struggled to find ways to cope with the heat, but at least one such effort ended in tragedy.

In Aurora, Ill., Gene Autry Pryor, 52, had been drinking with three adult friends near Veterans Memorial Island and jumped into the Fox River to cool off, police said. The man's friends lost sight of him after a few minutes and then spotted him floating face down and pulled him to shore. Pryor died Friday evening.

One man figured out a way to beat the heat: stay in the car. Roger Sinclair of Batavia, Ill., was headed home Saturday from Detroit, where he'd spent a few days visiting an old friend and catching Friday night's Tigers game. The Tigers won 4-2, but the conditions were less than ideal.

"It was 97 at the first pitch and still in the 80s at the time of the last out," he said. "It was tough. There was no breeze."

Sinclair said he had been spending hours in his air-conditioned car to stay out the worst of the heat.

In Chicago, street magician Jeremy Pitt-Payne said he has been working throughout the three-day stretch of triple-digit temperatures, but acknowledged that he might doff the Union Jack leather vest by the end of the day, even though it's part of his British magician character along with the black top hat.

But he had a secret for beating the heat – he starts his shows at 2 p.m. "when the Trump Tower is gracious enough to block out the sun" along his stretch of sidewalk.

At New York City's Penn Station, the air conditioning was falling short of full capacity. Amtrak officials have said for weeks that they've been trying to adjust it. The doors were left wide open at a half dozen locations around the two-block-wide underground station.

"It's so hot I feel like I want to faint," said Betty De la Rosa, 19, of the Bronx, who was working at a station doughnut shop.

The heat didn't stop Taylor Heaton of Houston from joining friends in Washington for her bachelorette party. They spent three hours walking the National Mall, seeing the Washington Monument and other tourist sites; they cooled off for a bit at the Lincoln Memorial, but kept walking until they reached the Smithsonian museum.

How hot was it by Saturday afternoon?

"Hotter than the gates of Hades," said Cathy Corey, also of Houston.

The bachelorette crew had a cocktail reservation for Saturday night at an outdoor deck at a hotel that overlooked the White House.

"How else are we going to see Barack (Obama)?" said Heaton. "It's really not too bad in the shade."

___

Zongker reported from Washington. Associated Press writers Verena Dobnik in New York, Ed Donahue in Alexandria, Va., Steve Szkotak in Richmond, Va., Mike Householder in Detroit, Carla K. Johnson in Chicago and Tom Coyne in South Bend, Ind. contributed to this report.

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  • Brian Frendsen

    Brian Frandsen pours water over his head in an effort to cool off while building a cement block wall on Saturday, July 7, 2012 in Huntsville, Ala. (AP Photo/The Huntsville Times, Dave Dieter)

  • A dock extends into a dry cove at Morse Reservoir in Noblesville, Ind., Thursday, July 5, 2012. The reservoir is down 3.5 feet from normal levels. Oppressive heat is slamming the middle of the country with record temperatures that aren

  • Monique Miller

    U.S. Postal Service letter carrier Monique Miller drinks from a bottle of water as she delivers mail in the Feltonville section of Philadelphia on Saturday July 7, 2012. Temperatures of more than 100 degrees were forecast in Philadelphia and excessive heat warnings were issued for several states in the Midwest as a heat wave continued. (AP Photo/Joseph Kaczmarek)

  • A cow looks for something to eat as it grazes in a dry pasture southwest of Hays, Kansas in a July 6, 2012 photo. A new report shows the drought gripping the United States is the widest since 1956. The monthly State of the Climate drought report released Monday, July 16, 2012 by the National Climactic Data Center says 55 percent of the continental U.S. is in a moderate to extreme drought. That's the most since December 1956, when 58 percent of the country was covered by drought. (AP Photo/The Hays Daily News, Steven Hausler)

  • Steve Niedbalski shows his drought and heat stricken corn while chopping it down for feed Wednesday, July 11, 2012 in Nashville Ill. Farmers in parts of the Midwest are dealing with the worst drought in nearly 25 years. (AP Photo/Seth Perlman)

  • A marshal is treated for heat exhaustion on the 18th green during the first round of the U.S. Women's Open golf tournament, Thursday, July 5, 2012, in Kohler, Wis. Oppressive heat is slamming the middle of the country with record temperatures that aren

  • The gate is closed on a boat ramp leading to a dry cove at Morse Reservoir in Noblesville, Ind., Monday, July 16, 2012. The reservoir is down nearly 6 feet from normal levels and being lowered 1 foot every five days to provide water for Indianapolis. (AP Photo/Michael Conroy)

  • A sun bear reacts to triple-digit temperatures at the Henry Doorly Zoo in Omaha, Neb., Friday, July 6, 2012. The temperature reached 103 degrees Fahrenheit (39.5 Celsius) Friday. (AP Photo/Nati Harnik)

  • Perspiration collects on construction worker David Macmullen's face in the afternoon heat, Friday, July 6, 2012, in Philadelphia.

  • A sheep stands in front of a large fan in its pen at the All-American Junior Sheep Show at the Iowa state fairgrounds, Thursday, July 5, 2012, in Des Moines, Iowa. Oppressive heat is slamming the middle of the country with record temperatures that aren

  • Concrete worker Lenny Rose pours water over his head in an effort to cool off from the extreme high temperatures while building a commercial industrial park during a record breaking heat wave that is over most of the country, Thursday, July 5, 2012 in Springfield, Ill. (AP Photo/Seth Perlman)

  • Wyatt Young, 5, cools off in a fountain set up outside Busch Stadium before a baseball game between the St. Louis Cardinals and the Miami Marlins Friday, July 6, 2012, in St. Louis. (AP Photo/Jeff Roberson)

  • Boats sit in the bottom mud at the dock in the west cove at Morse Reservoir in Noblesville, Ind., Thursday, July 5, 2012. The reservoir is down 3.5 feet from normal levels. Oppressive heat is slamming the middle of the country with record temperatures that aren

  • Nia McCall, 8, plays on the "Sprayground" at Keeley Park in McLeansville, N.C. on Friday, June 29, 2012. A record-breaking heat wave swept across the southeast starting Friday and is expected to last through Sunday. (AP Photo/Burlington Times-News, Scott Muthersbaugh)

  • DROUGHT

    Farmer Joe Fischer holds ears of corn showing the variety of kernal development Thursday, July 12, 2012, at Fischer Farms Inc. in Owensboro, Ky. Normally the silks would already be brown, Fischer said. "There is no pollen left because the silks were delayed. . . because it has been too hot and dry," Fischer said. All five Owensboro-area counties have been designated primary disaster areas because of drought. (AP Photo/The Messenger-Inquirer, John Dunham)

  • The sun rises Sunday, July 15, 2012, in Pleasant Plains, Ill. Corn stalks are struggling in the heat and continuing drought that has overcome most of the country. All of Illinois is officially in a drought, and Illinois Gov. Pat Quinn plans a trip to southern Illinois to discuss the state's plans for responding to dry conditions. (AP Photo/Seth Perlman)

  • Arlington County residents pass the time in the Central Public Library after it was made an official cooling station in Arlington, Va., Saturday, June 30, 2012. Bob McDonnell declared a state of emergency Saturday after a powerful storm killed at least six people in the state and knocked out power for hundreds of thousands, leaving them without air-conditioning in the middle of a blistering heat wave.(AP Photo/Cliff Owen)

  • Lee Shinn wears one of the umbrella shade hats he sells to beat the heat at the corner of Jackson and Springdale in Memphis, Tenn., Friday, July 6, 2012. With temperatures again reaching the 100 degree mark, Shinns shady solution is a steal at three dollars a piece. (AP Photo/The Commercial Appeal, Brandon Dill)

  • Tanya Winters cools off in a fountain at Butler Park in Austin, Texas, on Tuesday June 26, 2012. Tuesday's high temperature of 109 was the highest ever recorded in June in Austin. (AP Photo/Austin American-Statesman, Jay Janner)

  • A the thermometer on the sign at Cincinnati Federal Savings and Loan on Glenway Avenue at Sunset Avenue on the East and West Price Hill line reads 101 degrees, in Cincinnati, Thursday June 28, 2012. Nate Mackey holds a towel and a cup of water as he crosses Sunset Avenue. (AP Photo/The Enquirer, Glenn Hartong)

  • In this Monday, July 2, 2012, photo, visitors to the Smoky Mountains float on the Little River in Townsend, Tenn. The National Weather Service has crunched some end-of-June numbers that give dimension to the heat wave. In Nashville, June continued the trend of above-normal temperatures for an eighth consecutive month. June went into the records averaging 1.3 degrees above normal, but most people will dwell on the last days of the month that set an all-time heat record for Nashville at 109 degrees on Friday. (AP Photo/The Knoxville News Sentinel, Michael Patrick)

  • John Rohlfing

    John Rohlfing, 38, wipes off his face as he works on his the construction of his new home Thursday, July 5, 2012, in North Aurora, Ill. He started at 6:00 a.m. and quit at 11:00 a.m. because of triple digit temperatures and the safety in those conditions. Oppressive heat is slamming the middle of the country with record temperatures that aren

  • In this July 11, 2012 photo, Steve Niedbalski chops down his drought and heat stricken corn for feed in Nashville, Ill. All of Illinois is officially in a drought, and Gov. Pat Quinn plans a trip to southern Illinois to discuss the state's plans for responding to dry conditions. (AP Photo/Seth Perlman)

  • Julie Rhoades, James Rhoades

    Julie and James Rhoades, of Brazoria, Texas, sit in the shade of their umbrella to avoid the hot sun as they watch a World Cup of Softball game in Oklahoma City, Friday, June 29, 2012. (AP Photo/Sue Ogrocki)

  • Aletta, a rough-legged hawk, flaps her wings as she gets a cooling shower from a hose at the Carolina Raptor Center in Charlotte, N.C., Friday, June 29, 2012. Temperatures were expected to exceed 100 degrees in the Charlotte area for the next several days. (AP Photo/Chuck Burton)

  • Children cool off from the intense heat at a waterfront park on Friday, June 29, 2012, in downtown Louisville, Ky. The city endured a second straight day of triple-digit temperatures as a heat wave settled in across Kentucky. (AP Photo/Bruce Schreiner)

  • Gail Ballinger gives a fan to Virginia Elliott and Lisa Elliott Wednesday at the Salvation Army Social Services office in Chattanooga, Tenn., Wednesday, June 27, 2012. Temperatures are expected to reach record levels by the weekend. (AP Photo/Chattanooga Times Free Press, Tim Barber)

  • Delores Smith loads a donated fan for her mother outside the Salvation Army Social Services building in Chattanooga, Tenn., Wednesday, June 27, 2012. Temperatures are expected to reach record levels by the weekend. (AP Photo/Chattanooga Times Free Press, Tim Barber)

  • A customer holds a blue bubblegum strawberry combo from Delta Snow, a shaved ice walkup business owned by 17-year-old James David Ingram, of Yazoo City, Miss., Wednesday, June 27, 2012. Ingram, who had applied for various jobs with no results, decided to start his own business and hopes the current heat wave will bring his new business a steady stream of customers. (AP Photo/Rogelio V. Solis)

  • Ruby Ellis, Margaret Gainey

    Ruby Ellis, 13, receives a shaved ice cup handed from Delta Snow co-owner Margaret Gainey, Wednesday, June 27, 2012, in Yazoo City, Miss. Gainey and her grandson James David Ingram, 17, own the small business and appreciate the fact their trailer has air conditioning for the hot summer ahead. They hope the current heat wave brings their new business a steady stream of hot customers. (AP Photo/Rogelio V. Solis)

  • The sun rises above the horizon Wednesday morning, June 27, 2012 in Decatur, Ala. as roofer Mike Murphy cuts out blisters in the roof of Decatur High School. Much of Alabama is gripped in an early summer heat wave that has already sent the temperature over 100 degrees in some Alabama cities. To cope with the extreme heat, Murphy's work day starts at 5 a.m. and ends at 1:30 p.m. (AP Photo/The Decatur Daily, John Godbey)

  • In this photo provided by Coby Baalman, cattle drink from a tank being filled with hauled water because the windmill and underground pump can't keep up with the volume being consumed at the Baalman ranch Wednesday, June 27, 2012, in Menlo, Kan. Across the country, more than 900 heat records have been broken in the past week. If the forecasts hold, an intense heat wave gripping the center and western portion of the country could mean more will fall. (AP Photo/Courtesy Coby Baalman)

  • In this photo provided by Coby Baalman, ranch hand Terry Moss walks through a parched corn field Wednesday, June 27, 2012, in wheat stubble that hasn't grown much in the dry heat in Menlo, Kan. Across the country, more than 900 heat records have been broken in the past week. If the forecasts hold, an intense heat wave gripping the center and western portion of the country could mean more will fall. (AP Photo/Courtesy Coby Baalman)

  • In this photo provided by Charlie Wilson, a herd of Red Angus cattle stay close to a watering hole at the Wilson ranch Wednesday, June 27, 2012, near Lakeside, Neb. Across the country, more than 900 heat records have been broken in the past week. If the forecasts hold, an intense heat wave gripping the center and western portion of the country could mean more will fall. (AP Photo/Courtesy Charlie Wilson)

  • In this photo provided by Charlie Wilson, a herd of Red Angus cattle stay close to a watering hole and the windmill at the Wilson ranch Wednesday, June 27, 2012, near Lakeside, Neb. Across the country, more than 900 heat records have been broken in the past week. If the forecasts hold, an intense heat wave gripping the center and western portion of the country could mean more will fall. (AP Photo/Courtesy Charlie Wilson)

  • Corey Tipton, 9, Andrew Koestler, 11, Alexandria Tipton, 5, Anna Koestler, 9, and Zachary Tipton, 7, lie in the shallows of the Riverwalk at the Mud Island River Park in Memphis, Tenn. Tuesday, June 26, 2012. (AP Photo/The Commercial Appeal, Jim Weber)

  • Robert Mitchell

    Robert Mitchell, a brick mason with Professional Masonry from Birmingham, Ala., cools off with some cold water while working at the Belk Hudson Lofts construction site in downtown Huntsville, Ala., Sunday, July 1, 2012. Huntsville, Florence and other parts of northwest Alabama are under an excessive heat warning with forecasters show high temperatures breaking 100 degrees across the state. (AP Photo/The Huntsville Times,Glenn Baeske)

  • Justin Pegram, 4, plays on the "Sprayground" at Keeley Park in McLeansville, N.C. on Friday, June 29, 2012. A record-breaking heat wave swept across the southeast starting Friday and is expected to last through Sunday. (AP Photo/Burlington Times-News, Scott Muthersbaugh)

  • Anne Blaauwgeers

    Netherlands' Anne Blaauwgeers, right, wears a towel on her head to ward off the hot sun as she cheers from the dugout during the fourth inning of a World Cup of Softball game against Puerto Rico in Oklahoma City, Friday, June 29, 2012. (AP Photo/Sue Ogrocki)

  • Tourist and criminologist Luisa Sanchez picks through rocks at the foot of the East River in Brooklyn Bridge Park during a days-long heat wave of above 90 degrees in New York, Thursday, July 5, 2012. (AP Photo/Kathy Willens)

  • Sophie

    Sophie, 3, from Connecticut, frolics with a water sprinkler set up at the National Mall near the Lincoln Memorial, rear, in Washington Saturday, July 7, 2012. The heat gripping much of the country is set to peak Saturday in many places, including some Northeast cities, where temperatures close to or surpassing 100 degrees are expected. (AP Photo/Manuel Balce Ceneta)

  • Summer Santa Claus Tom Osborn of Taylor, Pa. a member of the Greater Scranton Jaycees, cools his feet in a pool of ice at Lackawanna County Courthouse Square during First Night festivities held in downtown Scranton, Pennsylvania on Friday, July 6, 2012. (AP Photo/The Scranton Times-Tribune, Butch Comegys)

  • Avery Gass, 4, slips her way through streams of cooling water, Friday, July 6, 2012, at the Thorton Murphy Park splash pad in Spokane, Wash. (AP Photo/The Spokesman-Review, Dan Pelle)

  • Steve Milewski uses a net to remove dead Northern Pike in Dean Lake in Plainfield Township near Grand Rapids, Mich. on Monday, July 9, 2012. The recent heat wave is blamed for raising the lake water temperature higher than the fish can tolerate. (AP Photo/The Grand Rapids Press, Chris Clark)

  • Kevin Sanabria

    Kevin Sanabria, 10, plays in a small waterfall in Trenton, N.J., Saturday, July, 7, 2012. People were coping as temperatures in the region climbed into the high 90s. (AP Photo/Mel Evans)

  • Gabriel Salas

    Philadelphia firefighter Gabriel Salas, Engine 72, drinks a bottle of water after extinguishing a fire in an auto detailing shop in the Oxford Circle section of Philadelphia on Saturday, July 7, 2012. Temperatures of over 100 degrees Fahrenheit were forecast in Philadelphia and excessive heat warnings were issued for several states in the Midwest as a heat wave continued. (AP Photo/Joseph Kaczmarek)

  • Nia Bailey, Amari Swint

    Nia Bailey, 8, of Washington, left, and Amari Swint, 8, of Philadelphia, throw water balloons while in an inflatable pool during a seventh annual block party on Newton Street in northwest Washington, during record heat with temperatures in the triple digits, Saturday, July 7, 2012. (AP Photo/Jacquelyn Martin)

  • Tracy Canty

    Tracy Canty, of Washington, wears a towel over his head against the sun and heat while cleaning off a grill in Washington, during record heat with temperatures in the triple digits, Saturday, July 7, 2012. (AP Photo/Jacquelyn Martin)

  • Ryan Lankamp

    Gambler gets a cooling shower from Ryan Lankamp, left, of Shelbyville, Michigan, following competition in the Ranch Sorting Championship at State Fair Parkin Oklahoma City, Friday, July 6, 2012. (AP Photo/Sue Ogrocki)

  • Luis Saavevra shades from the heat with a giant U.S. flag umbrella as he plays chess on an over-sized board in Union Square as temperature reached the 90s on Friday, July 6, 2012 in New York. he National Weather Service reported late Thursday that the record-breaking heat that has baked the nation's midsection for several days was slowly moving into the mid-Atlantic states and Northeast. (AP Photo/Bebeto Matthews)

  • The sun rises Sunday, July 15, 2012, in Pleasant Plains, Ill. Corn stalks are struggling in the heat and continuing drought that has overcome most of the country. All of Illinois is officially in a drought, and Illinois Gov. Pat Quinn plans a trip to southern Illinois to discuss the state's plans for responding to dry conditions. (AP Photo/Seth Perlman)