Last updated: March 6, 2026
Connecting to a data source
Set provider credentials on the Welcome screen or in Settings > Data Source. Weather Fusion uses the first station returned by the provider after credentials are accepted.
You can change the active station later in Settings, or on macOS from the File menu.
Before you connect, make sure the station is online, use the provider account that owns the station, and copy credentials directly from the provider website.
Provider at a glance
| Provider | Historical depth | Typical metric coverage | Key limitations |
|---|---|---|---|
| WeatherLink | Usually deepest history | Broadest coverage with installed sensors | Historical access depends on WeatherLink subscription tier |
| WiFiLogger | Depends on logger storage and endpoint availability | Broad local sensor coverage when exposed by device | Works only on the same local network |
| Weather Underground | Depends on account and retention | Core station metrics plus provider-dependent extras | Coverage varies by station and account |
| Windy | Usually limited history | Core station metrics | Historical depth is more limited than WeatherLink |
Set up WeatherLink
- Confirm your station is uploading to WeatherLink Cloud.
- Sign in at weatherlink.com/account and open Developers > API Keys.
- Copy API Key v2 and API Secret into Weather Fusion.
- Optional: turn on Display Demo Station to include the Davis demo station in the station list.
- Choose Test Connection. When the test succeeds, save settings.
Set up WiFiLogger
- Confirm WiFiLogger is running and reachable on the same local network.
- In Weather Fusion, choose Scan Network.
- If scan fails, enter the endpoint manually using the IP shown in WiFiLogger at Setup > Network Info.
- Choose Test Connection. When the test succeeds, save settings.
Confirm Weather Fusion has Local Network permission in system privacy settings, or grant permission when asked.
Set up Weather Underground
- Confirm your station is transmitting to Weather Underground.
- Sign in to wunderground.com/member/devices.
- Copy Device ID from My Devices and your API key from API Keys.
- Paste both values in Weather Fusion.
- Choose Test Connection. When the test succeeds, save settings.
Set up Windy
- Confirm your station is sending data to Windy.
- Sign in to stations.windy.com/stations, open station details, and choose Show Key.
- Copy the API key into Weather Fusion.
- Choose Test Connection. When the test succeeds, save settings.
Test Connection
After entering credentials, use Test Connection in the provider settings form.
- If the test succeeds, Weather Fusion shows Connection successful.
- If the test fails, Weather Fusion shows a provider error message.
If a test fails, verify credentials, account access, and network reachability, then test again.
Compatibility answers
- Which providers does Weather Fusion support?
- Weather Fusion supports WeatherLink, WiFiLogger, Weather Underground, and Windy.
- Does WiFiLogger work over the internet?
- No. WiFiLogger access requires your device and logger to be on the same local network.
- Which provider usually has the deepest historical data?
- WeatherLink usually provides the deepest historical depth, depending on your account tier.