Pep Guardiola's side put themselves on the brink of title glory with Saturday's 3-1 victory at Tottenham and Manchester United's failure to take points off West Brom on Sunday left City beyond mathematical reach.
Manchester City triumphs after United's loss to West Brom, a result so unexpected that City's manager had been away playing golf. Last week we were 2-0 down against City and we changed the game to win 3-2.
But United's shock defeat at the hands of 20th-placed West Brom confirmed City's title with five games remaining - the joint-quickest Premier League title win.
Guardiola, who failed to land a trophy in his first season in charge at The Etihad, opened his account by winning the League Cup in February against Arsenal.
"If we won a league, fans would not worry about their style of play".
West Brom had lost eight of their previous nine games and last won on January 13.
"City won the title because they won more points than everyone else, not tell City they won title because United did not win, it is not fair on them".
An 18-match winning run from late-August to late-December laid the platform for the runaway title victory, and it was only a matter of when it would be clinched.
Mourinho, however, has told Pogba he wants to see greater consistency from him, particularly in training, with the United manager clearly implying the 25-year-old midfielder has not always hit the necessary standards. They win the return fixture in this one thanks to a fine Frank Lampard goal.
"I don't know if I was the first or second or third but I congratulated them face to face when I had the chance", Mourinho said.
Guardiola's side have only dropped points against Burnley and United since the New Year, while marching into an explosive Champions League quarter-final with Liverpool that saw them knocked out earlier this month.
"I won eight titles and I am not on the moon because I won against Manchester City".