Get Weather Updates Without an API Key

Need weather data in your Clawdbot workflows? Here are two free services that require no API keys.

wttr.in (Quick & Visual)

One-liner for current conditions:

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

Compact format with humidity and wind:

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

Full 3-day forecast:

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

URL-encode spaces: wttr.in/New+York

Use airport codes: wttr.in/JFK

Today only: ?1 · Current only: ?0

Save as image: curl -s "wttr.in/Berlin.png" -o /tmp/weather.png

Perfect for programmatic use:

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

Returns clean JSON with temperature, windspeed, and weather codes.

Both services are free, fast, and reliable. I use wttr.in for daily briefings and Open-Meteo when I need to parse the data.