Privacy Policy

Weather Clock — Chrome Extension • Last updated: August 4, 2026

What Data Is Accessed

Weather Clock accesses the following information to provide its functionality:

• Geolocation coordinates (latitude and longitude) — used to fetch weather data, tidal information, and disaster alerts for your location.
• City names you save — stored locally for the multi-city carousel feature.
• Your preferences — theme, weather model, 12/24h format, alert toggles, and optionally a Stormglass API key you provide.

How Data Is Stored

All data is stored locally on your device using chrome.storage.local. Nothing is sent to any server we own or operate. We do not have a backend, database, or analytics service.

Third-Party API Requests

To display weather and alert information, your coordinates are sent to the following third-party services:

• Open-Meteo (open-meteo.com) — weather forecasts. No API key required. Their privacy policy.
• Stormglass (stormglass.io) — tidal data. Only if you provide your own API key. Their privacy policy.
• OpenStreetMap Nominatim (nominatim.openstreetmap.org) — geocoding (converting coordinates to city names). Their privacy policy.
• jsDelivr (cdn.jsdelivr.net) — weather icons only. No coordinates or personal data are sent; like any request for an image, it does reveal your IP address to the CDN. Their privacy policy.

For disaster alerts, the extension downloads public alert feeds and filters them locally on your device, comparing your coordinates against each alert's affected area without sending them anywhere. There is one exception:

• National Weather Service (api.weather.gov) — for locations in the USA, your coordinates are sent as a query parameter so the service can return the alerts covering that exact point. This is necessary because most NWS alerts reference forecast zones rather than publishing a boundary that could be matched on your device. Their privacy policy.

Alert data sources include: USGS, NWS (USA), GeoNet and MetService (New Zealand), SMN (Argentina), INMET (Brazil), MeteoChile (Chile), MeteoAlarm (Europe), NAAD (Canada), and NOAA NHC (hurricanes). Apart from the NWS request above, these feeds are fetched in full and filtered on your device.

Data We Collect

None. We do not collect, log, or transmit any user data. There is no analytics, no telemetry, no tracking, and no advertising.

Permissions Explained

• Geolocation — to determine your location for weather data.
• Storage — to save your preferences and cached data locally.
• Notifications — to alert you about nearby natural disasters.
• Alarms — to periodically check for new disaster alerts in the background.

Children's Privacy

Weather Clock does not knowingly collect any information from children under 13. The extension does not collect information from anyone.

Changes to This Policy

If we update this privacy policy, we will post the new version at this URL with an updated date. Since no data is collected, changes are unlikely.

Contact

If you have questions about this privacy policy, please open an issue on our GitHub repository.