--- description: Heat warnings are in effect from St. Louis to Memphis to Philadelphia title: Heat Wave Affects Millions of Americans This Week image: https://static.time.com/v3/assets/bltea6093859af6183b/blt4accc63854a30058/69885cf40a4a22034a9c55cd/heatwave-weather-united-states.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 ---  * [U.S.](/section/us/) ## U.S. Update your preferences in [Account Settings](/account/preferences/) Close * [weather](/tag/weather/) ## weather Update your preferences in [Account Settings](/account/preferences/) Close # Heat Wave Affects Millions of Americans This Week by [NBC News](/author/nbc-news/) ## NBC News Update your preferences in [Account Settings](/account/preferences/) Close Jul 29, 2015 1:58 PM CUT  A woman relaxes by the East River on a sweltering hot afternoon in New York, on July 28, 2015. A woman relaxes by the East River on a sweltering hot afternoon in New York, on July 28, 2015.Spencer Platt—Getty Images by [NBC News](/author/nbc-news/) ## NBC News Update your preferences in [Account Settings](/account/preferences/) Close Jul 29, 2015 1:58 PM CUT Millions of Americans were battling a heat wave Wednesday, facing blazing temperatures and thick humidity which will make the summer scorcher only feel worse. Excessive heat warnings were in effect from St. Louis down the Mississippi River and past Memphis — into northeastern Louisiana and including Philadelphia. In total, around 35 million people will be under some sort of heat advisory on Wednesday, according to The Weather Channel. The sweltering heat is expected to last unusually long, Weather Channel meteorologist Kevin Roth said. “Most of the country over the next week will see temperatures of 90 or higher,” Roth said. “There’s not… [Read the rest of the story from our partners at NBC News](http://www.nbcnews.com/news/weather/heat-advisories-affect-millions-summer-temperatures-climb-n400176?cid=par-time-article%5F20150729 "undefined") ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3976580/heat-wave-july-2015/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3976580/heat-wave-july-2015/"},"headline":"Heat Wave Affects Millions of Americans This Week","datePublished":"2015-07-29T13:58:39.000Z","dateModified":"2026-02-22T09:41:36.549Z","description":"Heat warnings are in effect from St. Louis to Memphis to Philadelphia","url":"https://time.com/3976580/heat-wave-july-2015/","keywords":["weather","Summer","heat wave"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt4accc63854a30058/69885cf40a4a22034a9c55cd/heatwave-weather-united-states.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"NBC News","jobTitle":null,"url":"https://time.com/author/nbc-news/"}],"articleSection":"U.S.","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt4accc63854a30058/69885cf40a4a22034a9c55cd/heatwave-weather-united-states.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"heat wave United States","caption":"heat wave United States","creditText":"Spencer Platt—Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/us/","name":"U.S."}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/weather/","name":"weather"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3976580/heat-wave-july-2015/","name":"Heat Wave Affects Millions of Americans This Week"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"Some Easy Ways to Lower Your Cooling Bill This Summer","description":"Setting your thermostat to 78 degrees Fahrenheit, running fans and keeping the blinds closed are all easy ways to keep your cooling bill down.","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/K8Pn1Jc1/poster.jpg?width=720","uploadDate":"2015-06-19T17:25:53.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/K8Pn1Jc1.m3u8","embedUrl":"https://time.com/3976580/heat-wave-july-2015/","duration":"PT54S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/3976580/heat-wave-july-2015/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```