Lille logs 3 hot days a year to Paris's 9 — Lille wins by 6. Lille also leads on frost days by 9.

Lille runs about $2,363/mo for a balanced lifestyle against Paris's $2,953/mo — Lille comes in $590 cheaper each month, roughly 25% less.

On mobility, Paris scores 4.6 vs Lille's 3.2 (0–5 scale), with the biggest gap on flight connectivity. Lille still holds an edge on car efficiency.

Paris's culture score of 4.7 sits well above Lille's 3.4, with the biggest gap on history museums.

Paris's nature & outdoors score of 4.7 sits well above Lille's 2.8, with the biggest gap on rock climbing. Lille still holds an edge on sea access.

Lille's safety score is ~1.8× Paris's — in the upper band, while Paris lands below average, with the biggest gap on road safety.

Paris's career score of 4.9 sits well above Lille's 3.4, with the biggest gap on career opportunities.

Lille and Paris score neck-and-neck on social & community (3.0 vs 3.1, 0–5 scale).

On food & dining, Paris scores 4.2 vs Lille's 2.8 (0–5 scale), with the biggest gap on brunch availability.

On family, Paris scores 4.1 vs Lille's 2.7 (0–5 scale), with the biggest gap on international schools.

Lille and Paris score neck-and-neck on healthcare (3.7 vs 3.7, 0–5 scale).

Lille averages 9.5 µg/m³ (good) PM2.5 annually versus Paris's 10.1 µg/m³ (moderate) — Lille breathes ~6% cleaner air (0.6 µg/m³ lower).

Who Thrives Here