Boston vs Shanghai
Live UV index comparison
Live readings are temporarily unavailable — showing each city's modelled peak UV (historical average / clear-sky). Values update as live data returns.
Based on modelled peaks, Shanghai has the stronger sun — UV 7.7 vs 3.7.
Side-by-side
| Metric | Boston | Shanghai |
|---|---|---|
| UV (peak) | 3.7 | 7.7 |
| Risk level | Moderate | High |
| Today's max UV | 3.7 | 7.7 |
| Country | United-States | China |
| Latitude | 42.3188 | 31.1667 |
| Population | 4,208,580 | 24,073,000 |
Monthly UV trend
Average UV index by month, Boston vs Shanghai.
