Personally I pronounce it "kwem-yoo" (first syllable starts like 'quest', second syllable like the second-person pronoun 'you'). But I think there are multiple pronunciations floating around...

Key-Moo for me… am I horribly wrong?

Q-Emu for me, with stress on the first and last syllables so that it almost rhymes. It probably sounds more like I'm spelling out Q-M-U.

This seems to be the most common pronunciation, but there's definitely variation:

https://youtu.be/yJw9Avhy_vc

I’ve always pronounced it Kim-you, although that’s probably incorrect

I might be the only one that uses the verbose Q E M U.