| Distance / Altitude | Location | Report Date / Time | Live Weather | Wind | Gusts | Temp. | Visibility | Cloud |
|---|---|---|---|---|---|---|---|---|
| 4 km W / 25 m | Boston (Massachusetts) | 2025-07-09 16:00 local (2025/07/09 20:00 GMT) | dry | calm (0 km/h at 163) | 21°C | - | - - 0 | |
| 4 km N / 218 m | Boston Airport (Massachusetts) | 2025-07-09 14:54 local (2025/07/09 18:54 GMT) |  Dry and cloudy | light winds from the ENE (17 km/h at 70) | 20°C | 16 | few overcast | |
| 4 km WNW / 3 m | BUOY-BHBM3 (Marine) | 2025-07-09 16:18 local (2025/07/09 20:18 GMT) | - (- km/h at -) | 20°C | - | |||
| 6 km NE / 10 m | Winthrop (Massachusetts) | 2025-07-09 16:38 local (2025/07/09 20:38 GMT) | dry | wind obs. (8 kph from 71 degs) was rejected (- km/h at -) | 22°C | - | - - 0 | |
| 8 km N / 122 m | Chelsea (Massachusetts) | 2025-07-09 16:05 local (2025/07/09 20:05 GMT) | dry | calm (0 km/h at 135) | 21°C | - | - - 0 | |
| 8 km W / 14 m | Cambridgeport wx (United States) | 2025-07-09 16:07 local (2025/07/09 20:07 GMT) | dry | wind obs. (6 kph from 45 degs) was rejected (- km/h at -) | 22°C | - | - - 0 | |
| 8 km S / 34 m | Lower Mills wx (United States) | 2025-07-09 16:03 local (2025/07/09 20:03 GMT) | dry | calm (0 km/h at 37) | 22°C | - | - - 0 | |
| 9 km S / 25 m | Milton (Massachusetts) | 2025-07-09 16:30 local (2025/07/09 20:30 GMT) | dry | calm (0 km/h at 18) | 21°C | - | - - 0 | |
| 9 km SW / 28 m | Forest Hills wx (United States) | 2025-07-09 16:27 local (2025/07/09 20:27 GMT) | dry | calm (3 km/h at 55) | 22°C | - | - - 0 | |
| 10 km WNW / 15 m | Somerville (Massachusetts) | 2025-07-09 16:34 local (2025/07/09 20:34 GMT) | dry | calm (2 km/h at 143) | 23°C | - | - - 0 |
* NOTE: not all live weather reports for Castle Island, Boston Harbor, Massachusetts update at the same frequency which is why some locations can show data from stations that are more remote if the report is more recent than known closer ones. We also include live weather reports from ships and buoys if data are submitted close to Castle Island, Boston Harbor, Massachusetts, United States and within an acceptable time window.
Nearest