Private online access: You can access your weather data anytime, anywhere from any browser. Go to smartweather.weatherflow.com and login with the same username & password that you created for the mobile app.
Shared online access: To enable others to see your weather data, make sure you have set your station to share publicly via the mobile app.
App > Settings > Stations > Public Data > Share Publicly (toggle on).
Then simply log into smartweather.weatherflow.com and click on the share button in the bottom left corner to get your station URL.
Shared app access: Each station can only be linked to one Smart Weather account. If you want to share your station data with someone else in the app, they will need to sign into your Smart Weather account. There are no sign in restrictions with the app, so you and multiple family members can all have the app open at the same time.