Billboard Hot 100 - 2015
January 3
January 10
"Blank Space" by Taylor Swift
"Blank Space" was The Hot 100's #1 song on January 3 and January 10.
January 17
January 24
January 31
February 7
February 14
February 21
February 28
March 7
March 14
March 21
March 28
April 4
April 11
April 18
"Uptown Funk!" by Mark Ronson Featuring Bruno Mars
"Uptown Funk!" was The Hot 100's #1 song on January 17, January 24, January 31, February 7, February 14, February 21, February 28, March 7, March 14, March 21, March 28, April 4, April 11, and April 18.
April 25
May 2
May 9
May 16
May 23
May 30
"See You Again" by Wiz Khalifa Featuring Charlie Puth
"See You Again" was The Hot 100's #1 song on April 25, May 2, May 9, May 16, May 23, and May 30.
June 6
"Bad Blood" by Taylor Swift Featuring Kendrick Lamar
"Bad Blood" was The Hot 100's #1 song on June 6.
June 13
June 20
June 27
July 4
July 11
July 18
"See You Again" by Wiz Khalifa Featuring Charlie Puth
"See You Again" was The Hot 100's #1 song on June 13, June 20, June 27, July 4, July 11, and July 18.
July 25
August 1
August 8
August 15
"Cheerleader" by OMI
"Cheerleader" was The Hot 100's #1 song on July 25, August 1, August 8, and August 15.
August 22
"Can't Feel My Face" by The Weeknd
"Can't Feel My Face" was The Hot 100's #1 song on August 22.
August 29
September 5
"Cheerleader" by OMI
"Cheerleader" was The Hot 100's #1 song on August 29 and September 5.
September 12
"Can't Feel My Face" by The Weeknd
"Can't Feel My Face" was The Hot 100's #1 song on September 12.
September 19
"What Do You Mean?" by Justin Bieber
"What Do You Mean?" was The Hot 100's #1 song on September 19.
September 26
"Can't Feel My Face" by The Weeknd
"Can't Feel My Face" was The Hot 100's #1 song on September 26.
October 3
October 10
October 17
October 24
October 31
November 7
"The Hills" by The Weeknd
"The Hills" was The Hot 100's #1 song on October 3, October 10, October 17, October 24, October 31, and November 7.
November 14
November 21
November 28
December 5
December 12
December 19
December 26