"Honolulu is voggy today."
Translation:Polalauahi ʻo Honolulu i kēia lā.
ʻO with ʻokina is used in front of Names (people, places): ʻo Kaleo, ʻo Honolulu, with "who" (ʻo wai) and with "he/she" (ʻo ia).
O without ʻokina corresponds more or less to the English "of" or " 's": "Pehea ke anilā o Honolulu?" = "How is Honolulu's weather?" or "How is the weather of Honolulu?"
It seems, when o or e is used, you do not use ʻo.