wttr.in

Overview

wttr.in is a command-line-friendly weather service: point curl at a city name and get a beautiful ANSI-formatted forecast right in your terminal. It also supports JSON, plain text, and PNG output, and requires no API key.

It’s the classic “weather in your terminal” tool — great for shell scripts, status bars, MOTD, and quick checks.

Quick Start

Weather for your IP location:

curl wttr.in

Weather for a specific city:

curl wttr.in/London
curl wttr.in/Shanghai

JSON output (great for scripts):

curl "wttr.in/London?format=j1"

Compact one-line format:

curl "wttr.in/London?format=3"

Custom format with placeholders:

curl "wttr.in/London?format=%c+%t+%w"

What you can do

• City names, lat,lon coordinates, or ICAO airport codes (wttr.in/EGLL)
• ?format=j1 full JSON for programmatic use
• ?format=3 / 4 / 5 compact text variants
• PNG output for embedding in web pages: wttr.in/London.png
• Forecast for multiple days (default 3 days)

Authentication

None — wttr.in works without registration or keys.

Rate Limits & Notes

• Free and keyless; be polite with heavy automation (it’s a free community service).
• Data coverage is global; some stations update more frequently than others.
• ?format=j1 returns a fairly large JSON — cache it if you poll often.

FAQ

Does wttr.in need an API key? No — it’s completely keyless.

Can I get JSON instead of terminal art? Yes — append ?format=j1 for full JSON, or ?format=3 for a compact text line.

Can I embed it in a web page? Yes — PNG output (wttr.in/London.png) renders the forecast as an image.