Climate
Kharkiv logs 30 hot days a year to Sumy's 12 — Sumy wins by 18. Kharkiv also leads on sunny days by 13.
Kharkiv
Feels-like °C
Dinner outside
Sumy
Feels-like °C
Dinner outside
Air Quality
Kharkiv averages 13.8 µg/m³ (moderate) PM2.5 annually versus Sumy's 10.8 µg/m³ (moderate) — Sumy breathes ~22% cleaner air (3.0 µg/m³ lower).
Kharkiv
Sumy
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.
Kharkiv (1.3M) and Sumy (177K) are 7.2x in population — Kharkiv is the larger metro, Sumy the smaller; on land area Kharkiv spans roughly 4.5x more ground.
Kharkiv is roughly 5.7x the scale of Sumy
Combined population & area comparison
KharkivSumyCity Scale Rankings
Kharkiv1.3M7.2xSumy177K1xKharkiv232 km²4.5xSumy51 km²1xKharkiv
Sumy
Who Thrives Here
Both cities work well for the clean air seeker.
Also compared
Frequently asked about Kharkiv vs Sumy
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