Onsala
Neptun covers Onsala (Sweden) through the SMHI network. One GET request returns its readings as JSON — in the same shape as every other network Neptun serves, so you write the parsing once.
Source: SMHI · Position: 57.3919, 11.9189
Values at build time
| water level | 0.1 m |
| water temperature | 16.2 °C |
Snapshot taken at build time: 14.09.2026 09:00 UTC. Query the API for live values.
Request
curl -H "Authorization: Bearer mapi_YOUR_KEY" \
"https://neptun.marine-api.com/v1/levels?lat=57.3919&lon=11.9189&radius=5"