Do I need an SDK?
Do I need an SDK?
No. The API is plain JSON over a standard WebSocket connection, so any client that speaks RFC-6455 works, including Python, Node.js, Go, and a browser tab.
What happens if my connection drops?
What happens if my connection drops?
Wait a few seconds, reconnect, and re-subscribe. Last-value replay means you receive the current state again immediately; see Heartbeats & Reconnection.
Why did I get the same station's weather twice?
Why did I get the same station's weather twice?
You’re likely subscribed to both
metar.atis.<icao> and metar.obs.<icao> for the same station. Deduplicate using the pair of station and report_time; see D-ATIS Fast Lane.Can I use my API key directly in a browser app?
Can I use my API key directly in a browser app?
You can, for internal dashboards and demos. For public-facing products, proxy the stream through your backend instead, since anything shipped to a browser is visible in DevTools.
What happens when my subscription ends?
What happens when my subscription ends?
The account returns to the Sandbox plan. Existing keys keep working, scoped back to the sandbox.demo channel and basic-tier forecasts.
How do I know my account's current limits?
How do I know my account's current limits?
Read the ack frame sent right after connecting. It always reflects your effective plan and limits, which is more reliable than hardcoding the plans table.
Is it safe to subscribe to a station I'm not sure is covered?
Is it safe to subscribe to a station I'm not sure is covered?
Yes. A channel that doesn’t exist yet fails with a channel_format error rather than closing your connection, so probing is safe.
Still need help?
Contact hello@metar.ws