Climate
Rio de Janeiro logs 65 hot days a year to União's 343 — Rio de Janeiro wins by 278. Rio de Janeiro also leads on outdoor-dinner months by 5.
Rio de Janeiro
Feels-like °C
Dinner outside
União
Feels-like °C
Dinner outside
Cost of Living
Rio de Janeiro averages $1,689/mo for balanced living; União has no cost baseline yet.
Rio de Janeiro
$1,689monthly · balanced
Mobility
Rio de Janeiro scores 2.8 on mobility (0–5 scale); União has no mobility baseline.
Culture
Rio de Janeiro's culture score of 4.2 sits well above União's 0.0.
Nature & Outdoors
Rio de Janeiro scores 5.0 on nature & outdoors (0–5 scale); União has no nature & outdoors baseline.
Safety
Rio de Janeiro scores 0.6 on safety (0–5 scale); União has no safety baseline.
Career
Rio de Janeiro scores 3.2 on career (0–5 scale); União has no career baseline.
Social & Community
Rio de Janeiro scores 3.4 on social & community (0–5 scale); União has no social & community baseline.
Food & Dining
Rio de Janeiro scores 3.2 on food & dining (0–5 scale); União has no food & dining baseline.
Family
Rio de Janeiro scores 3.1 on family (0–5 scale); União has no family baseline.
Healthcare
Rio de Janeiro scores 2.4 on healthcare (0–5 scale); União has no healthcare baseline.
Air Quality
Rio de Janeiro averages 15.7 µg/m³ (sensitive-groups) PM2.5 annually versus União's 10.4 µg/m³ (moderate) — União breathes ~33% cleaner air (5.3 µg/m³ lower).
Rio de Janeiro
União
PM2.5 annual average
WHO classification
City Scale
Both maps at the same real-world scale — 1 cm on either map is the same distance.
Rio de Janeiro (9.9M) and União (16K) are 629x in population — Rio de Janeiro is the larger metro, União the smaller.
Rio de Janeiro is roughly 629x the scale of União
Based on population (area data unavailable for some cities)
Rio de JaneiroUniãoCity Scale Rankings
Rio de Janeiro9.9M629xUnião16K1xWho Thrives Here
Rio de Janeiro is the stronger fit for the ocean lover. Both cities work well for the winter escapist.
Also compared
Frequently asked about Rio de Janeiro vs União
▶Which is cheaper, Rio de Janeiro or União?
▶How does the climate compare between Rio de Janeiro and União?
▶Is Rio de Janeiro or União safer?
▶Should I move to Rio de Janeiro or União?
The best city depends on what matters to you
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