Privacy
Last updated: 2026-07-15
Your location never leaves the lookup
- Coordinates you search, click on the map, or share via browser geolocation are used in memory only to compute your forecast. Individual queries are never written to disk, logs or a database — on this site or on our server (access logging of query URLs is disabled).
- Coordinates and place names are never put in page URLs and never sent to analytics.
- The weather lookup sent upstream to Open-Meteo uses the center of a ~20 km grid cell, not your exact coordinates.
What we do count
Operational metrics are anonymous aggregate counters only: a time bucket, an outcome (for example "forecast served" or "weather upstream failed") and a count. No coordinates, IP addresses, user agents or referrers are kept.
Analytics
If web analytics (Google Analytics 4, PostHog) are enabled, they receive page views and a small set of product events such as forecast_viewed. Event properties pass an allowlist filter that strips anything resembling coordinates or place names. Session recording and autocapture are off. Visiting ?internal_traffic=1 marks a browser as internal and excludes it.
Local storage on your device
Two non-sensitive display flags may be stored in your browser: the red-light mode preference and the internal-traffic marker. Your locations are not stored — reloading the page forgets them.
No accounts, no payments
Stellarhound is free, has no login and collects no names, emails or payment data.
Data sources and attribution
- Weather: Open-Meteo.com (CC BY 4.0)
- Light pollution: David Lorenz, World Atlas of Artificial Night Sky Brightness 2024, based on EOG VIIRS data (CC BY 4.0). Bortle values shown are approximations derived from zenith brightness.
- Ephemeris: computed locally with Skyfield and the JPL DE440s kernel.
- Dark-sky places: DarkSky International certified locations, each linked to its official page.