Highest Cities on Earth
Twelve of the pool’s highest-elevation cities, from Johannesburg at 1,753m up to Potosí at 4,067m. Thinner air and a different relationship with cold and UV reshape daily life here as much as latitude does.
Sinking Cities
Fifteen cities this dataset flags ‘Severe’ or ‘Extremely High’ for coastal flood risk, from megacities like Jakarta and Shanghai down to smaller ports like Semarang. A risk tier, not a forecast of when or whether any one of them floods.
Megacities
Twelve of the largest metro populations in the pool, every one north of 20 million people — Tokyo tops it at roughly 37.4 million. Scale like this changes almost everything else about how a city runs.
Small but Mighty
The pool’s smallest metro populations, from Hobart at roughly 255,000 up to Nakhon Ratchasima at 466,000 — all still clearing this game’s population floor. A different texture of clue than the megacities: less name recognition to lean on.
Cleanest Air
Twelve cities with the lowest annual PM2.5 readings in the pool, from Quito at 2.1 µg/m³ up to Winnipeg at 5.5 µg/m³ — well below where most of this dataset’s 255 cities sit. Wind and geography help as much as policy does.
Fastest-Warming Futures
Twelve cities carrying this dataset’s steepest modelled 2050 temperature anomaly, each around +3.0 to +3.2°C — Ulaanbaatar and Anchorage lead the list. A modelled, directional estimate for play, not a locked-in prediction for any named city.
Concrete Heat Islands
Twelve cities with the strongest modelled urban heat island effect in the pool — Phoenix leads at +5.0°C over its surrounding rural baseline. Pavement, building density, and lost tree cover drive this more than raw latitude does.
Driest Cities on the Map
Twelve of the pool’s driest cities by annual precipitation, from Antofagasta at 4.4mm up to Khartoum at 120.4mm — a fraction of what most of the other 255 cities receive in a year. Desert climates that still support millions of people.