Flywhen compares hour-by-hour forecast conditions with the limits you choose. It checks wind at the planned height, gusts, temperature, rain, cloud base, visibility and optional GNSS factors, then names the weather model and resolution behind each hour.
GO FLY and Good to fly are fast forecast indicators, not flight clearance or a guarantee. Verify conditions at the site, your aircraft instructions, airspace, permissions and local rules before operating.