Boston logs 203 sunny days a year to San Francisco's 276 — San Francisco wins by 73. Boston and San Francisco match on outdoor-dinner months (4 vs 4).

Boston runs about $4,582/mo for a balanced lifestyle against San Francisco's $5,450/mo — Boston comes in $868 cheaper each month, roughly 19% less.

On mobility, San Francisco scores 4.0 vs Boston's 3.8 (0–5 scale), with the biggest gap on flight connectivity. Boston still holds an edge on car efficiency.

San Francisco's culture score of 4.3 sits well above Boston's 4.0, with the biggest gap on nightlife. Boston still holds an edge on history museums.

San Francisco's nature & outdoors score of 4.5 sits well above Boston's 4.0, with the biggest gap on mountain access. Boston still holds an edge on lakes & rivers.

Boston's safety score is ~1.4× San Francisco's — in the middle of the scale, while San Francisco lands below average, with the biggest gap on road safety. San Francisco still holds an edge on flooding safety.

Boston and San Francisco score neck-and-neck on career (4.6 vs 4.7, 0–5 scale).

San Francisco's social & community score is ~1.2× Boston's — in the upper band, while Boston lands in the middle of the scale, with the biggest gap on street atmosphere.

On food & dining, San Francisco scores 5.0 vs Boston's 4.2 (0–5 scale), with the biggest gap on restaurant variety.

Boston and San Francisco score neck-and-neck on family (3.9 vs 3.9, 0–5 scale).

Boston and San Francisco score neck-and-neck on healthcare (3.5 vs 3.5, 0–5 scale).

Boston averages 6.7 µg/m³ (good) PM2.5 annually versus San Francisco's 7.5 µg/m³ (good) — Boston breathes ~11% cleaner air (0.8 µg/m³ lower).

Who Thrives Here