There's no city there. That point is near the southeast shore of Lake Victoria
in Tanzania, about 36 miles southeast of the town of Musoma.
The city at 19 degrees south latitude and 146 degrees east longitude is Nadi, located in Fiji.
the city of Nairobi, the capital of Kenya.
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That point is in South Africa, about 130 miles north-northeast of Capetown.
The city located at 19 degrees south latitude and 175 degrees west longitude is Nuku’alofa, the capital of Tonga in the South Pacific.
The city at 31 degrees south latitude and 64 degrees west longitude is Buenos Aires, the capital of Argentina.
The city located at 30 degrees south latitude and approximately 153 degrees east longitude is Sydney, Australia.
The city located at 6 degrees south latitude and 106 degrees west longitude is Lima, the capital of Peru.
Honolulu
Brazil
Brazil
There's no city there. "90 degrees south" is the definition of the south pole. There's quite a substantial living structure there, inhabited in shifts by scientists engaged in polar research, but nothing that you could call a city.