Language
Choose the language for the app interface and AI weather digests.
Automatic uses US units for US flights and metric for European flights. Altitude (ft), wind (kt) and distance (nm) are the same in both — only visibility differs today; QNH and temperature will follow this setting when added. Currency only affects how costs and donations are displayed.
Support Flyfun Weather
Flyfun Weather is free and sponsored by the operator. Voluntary donations
offset the running cost and keep it free for everyone — no perks, no premium tier.
Thank you very much for your existing donations! 💙
Support the service
Autorouter (GRAMET)
Link your autorouter.aero
account to enable GRAMET cross-section charts.
Status: Not set
MCP Access
Connect AI assistants to your weather briefings via the
Model Context Protocol.
Claude Desktop & claude.ai
Add a custom connector with the URL https://mcp.flyfun.aero/weather. Claude will prompt
you to sign in to flyfun and authorise access — no token needed.
Claude Code & other tools
Tools that don't support OAuth sign-in (such as Claude Code) authenticate with an API token. Generate one
below and supply it to the same https://mcp.flyfun.aero/weather endpoint.
Copy this token now — it won't be shown again.
Your Data
Export
Download a complete copy of the personal data we hold about you (account, flights, briefings, preferences, feedback) as a JSON file.
Privacy
Read what data the app collects, why, and what we do (and don't do) with it.
Privacy & Data Practices
Delete Account
Permanently delete your account and all associated data (flights, briefings, profiles). This action cannot be undone.
Flight Profiles
Create profiles for different aircraft or flight types (e.g., VFR, IFR). Each profile has its own parameters and advisory settings.
Flight Defaults
Default values when creating new flights with this profile.
Forecast Models
Select which NWP models to use for briefings with this profile.
Advisories
Enable or disable advisories and configure their parameters. Changes apply on next recalculation.
How the per-model ratings combine into the destination summary.
Which icing method feeds the advisory evaluators. All three are always visible on the cross-section.
Default cloud source for this profile. NWP uses the model's cloud cover; DD derives zones from sounding moisture. Both sources can be enabled simultaneously from the cross-section panel — this setting just picks the default. Advisory cloud detection is independent of this setting.
How clouds are rendered. Soft is GRAMET-like; Natural paints a continuous puffy band with colour varying by coverage; Square fills each zone as a cell with opacity from the value.
Which convective risk assessment feeds advisories. Thermo uses CAPE/CIN; NWP uses the model's convective cloud cover parameterisation (matches GRAMET).
Models
Select which briefing models are evaluated for advisories. Unchecked models are still available for cross-section and Skew-T.
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