Climate
Karlovac logs 57 frost days a year to Rijeka's 19 — Rijeka wins by 38. Rijeka also leads on hot days by 22.
Karlovac
Feels-like °C
Dinner outside
Rijeka
Feels-like °C
Dinner outside
Air Quality
Karlovac averages 13 µg/m³ (moderate) PM2.5 annually versus Rijeka's 11.2 µg/m³ (moderate) — Rijeka breathes ~14% cleaner air (1.8 µg/m³ lower).
Karlovac
Rijeka
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.
Karlovac (42K) and Rijeka (116K) are 2.8x in population — Rijeka is the larger metro, Karlovac the smaller.
Rijeka is roughly 2.8x the scale of Karlovac
Based on population (area data unavailable for some cities)
RijekaKarlovacCity Scale Rankings
Rijeka116K2.8xKarlovac42K1xWho Thrives Here
Both cities work well for the clean air seeker.
Also compared
Dubrovnik Frequently asked about Karlovac vs Rijeka
▶How does the climate compare between Karlovac and Rijeka?
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