There's no account, no backend server holding your data, and no tracking. Here's exactly what happens.
SkyTab adds an icon to your Chrome toolbar. It does not replace your new tab page or change anything else about how Chrome looks. Click the icon whenever you want to check the weather.
The first time you click SkyTab, it asks whether to use your device's location or let you type a city yourself. If you allow location access, that's a normal browser permission prompt, the same one any website would show you, not something SkyTab requests in secret. If you'd rather not share your location, typing a city works exactly the same way.
SkyTab looks up which country your coordinates or chosen city fall in, and shows Fahrenheit for the handful of countries that use it day to day (the United States being the main one), Celsius everywhere else. You can also lock it to one or the other manually in settings if you'd rather it never changed. In automatic mode, if you travel somewhere that uses a different unit, SkyTab picks that up the next time you check the weather there.
SkyTab requests current conditions and a 7-day forecast from Open-Meteo, a public weather data provider, using only your coordinates or the city you chose. When using automatic location, your coordinates are also sent to BigDataCloud's free reverse-geocoding service purely to determine which country you're in, for the automatic unit switching described above. Nothing else about you or your browsing is sent with either request.
Your chosen city, coordinates, country, and temperature unit preference are saved locally in Chrome's own storage for extensions. None of it is sent to us or to any third party beyond the two weather-related requests above. There is no account to create and nothing to sync to a server we run.
SkyTab's icon changes color and imagery based on whether it's day or night and current conditions where you are, sun, clouds, rain, snow, or a storm. It refreshes automatically roughly every 30 minutes, and instantly whenever you open the popup.
For the full details on data handling, see the privacy policy.