Weather

Get current weather and forecasts (no API key required).

Peter Steinberger

@steipete

What This Skill Does

Fetches current weather and forecasts for any location using curl, with no API key required. Supports wttr.in for terminal-friendly output and Open-Meteo as a JSON fallback.

Replaces signing up for weather API keys by providing two free, no-registration services accessible via simple curl commands.

When to Use It

  • Check today's weather in a city before heading out
  • Get a compact weather summary for a location in a shell script
  • Retrieve a full multi-day forecast for trip planning
  • Download a weather PNG image for embedding in a dashboard
  • Fetch current weather data as JSON for programmatic processing

Install

$ openclaw skills install @steipete/weather

Weather

Two free services, no API keys needed.

wttr.in (primary)

Quick one-liner:

curl -s "wttr.in/London?format=3"
# Output: London: ⛅️ +8°C

Compact format:

curl -s "wttr.in/London?format=%l:+%c+%t+%h+%w"
# Output: London: ⛅️ +8°C 71% ↙5km/h

Full forecast:

curl -s "wttr.in/London?T"

Format codes: %c condition · %t temp · %h humidity · %w wind · %l location · %m moon

Tips:

  • URL-encode spaces: wttr.in/New+York
  • Airport codes: wttr.in/JFK
  • Units: ?m (metric) ?u (USCS)
  • Today only: ?1 · Current only: ?0
  • PNG: curl -s "wttr.in/Berlin.png" -o /tmp/weather.png

Open-Meteo (fallback, JSON)

Free, no key, good for programmatic use:

curl -s "https://api.open-meteo.com/v1/forecast?latitude=51.5&longitude=-0.12&current_weather=true"

Find coordinates for a city, then query. Returns JSON with temp, windspeed, weathercode.

Docs: https://open-meteo.com/en/docs

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