7800° Fahrenheit is the second studio album by American rock band Bon Jovi, released on March 27, 1985 through Mercury Records. The album's title was a reference to the supposed melting point of rock. The album introduced the classic '80s Bon Jovi logo that would later on be used in Slippery When Wet and New Jersey.
The album recorded in six weeks between January and March 1985 at the Warehouse Studios in Philadelphia, Pennsylvania. The album marked the final collaboration between Bon Jovi and producer Lance Quinn.
7800° Fahrenheit reached #37 on the Billboard 200 albums chart and was the group's first record to be certified gold in the US. It remained charted for 85 weeks and was certified platinum on February 19, 1987. The singles "In and Out of Love" and "Only Lonely" both charted on the Billboard Hot 100. Despite being a fan favorite, the band was unsatisfied with the sound of the album, and before 2010's Circle Tour, hadn't played a song off the album live since 1987, excluding rare performances of Tokyo Road.