weather

description	Fetch current weather conditions and forecasts — no API key needed. Use this skill whenever the user asks about weather, temperature, rain, wind, humidity, forecast, or whether to bring an umbrella — even casual phrasing like "is it cold outside?", "what's the weather like in Tokyo?", "will it rain tomorrow in Seattle?", or "check the weather for me". Works on Linux, macOS, and Windows without any setup.
homepage	https://wttr.in/:help
metadata	{"echo":{"emoji":"🌤️"}}
name	weather

Weather

Fetch and display current weather and forecasts — no API key required.

Decision flow

1. Identify the location from the user's request.
   • If the user says "here", "my location", or gives no city, ask for the city name.
   • URL-encode spaces: New+York, São+Paulo.
   • Airport codes work: JFK, LHR, NRT.
2. Detect the platform (or infer from context):
   • Linux / macOS / Git Bash → curl
   • Windows PowerShell → curl.exe (bare curl maps to Invoke-WebRequest and may fail)
3. Choose the format based on what the user wants:
   • Quick one-liner → format=3
   • More detail (humidity, wind) → custom format string
   • Full 3-day forecast → ?T flag
   • Structured data / calculations → Open-Meteo JSON (see below)

---

wttr.in — primary source

One-line summary (default for most queries)

# Linux / macOS
curl -fsSL "https://wttr.in/London?format=3"
# → London: ⛅️ +8°C

# Windows PowerShell
curl.exe -s "https://wttr.in/London?format=3"

Compact with humidity and wind

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

# Windows PowerShell
curl.exe -s "https://wttr.in/London?format=%l:+%c+%t+%h+%w"

Full 3-day forecast (plain text, renders as a table)

curl -fsSL "https://wttr.in/London?T"          # Linux
curl.exe -s  "https://wttr.in/London?T"         # Windows

Current conditions only (no forecast days)

curl -fsSL "https://wttr.in/London?0"           # Linux
curl.exe -s  "https://wttr.in/London?0"          # Windows

Units

Append to the URL query string:

Suffix	Unit system
?m	Metric (°C, km/h)
?u	US customary (°F, mph)
?M	Metric with m/s wind
(none)	Auto-detected by IP

Format codes (for custom format= strings)

Code	Meaning
%c	Condition icon
%t	Temperature
%f	Feels-like
%h	Humidity
%w	Wind
%p	Precipitation
%P	Pressure
%l	Location name
%m	Moon phase

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Open-Meteo — fallback for structured/JSON use

Use when the user wants data for calculations, comparisons, or programmatic output. Requires coordinates (latitude/longitude).

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

# Windows PowerShell (cleanest for JSON)
Invoke-RestMethod -Uri "https://api.open-meteo.com/v1/forecast?latitude=51.5&longitude=-0.12&current_weather=true"

Returns JSON: temperature, windspeed, winddirection, weathercode, time.

Add &hourly=temperature_2m,precipitation for hourly data, or &daily=temperature_2m_max,precipitation_sum for daily summaries. Docs: https://open-meteo.com/en/docs

WMO weather code → plain language

Code	Description
0	Clear sky
1–3	Partly cloudy
45, 48	Fog
51–67	Drizzle / Rain
71–77	Snow
80–82	Rain showers
85–86	Snow showers
95	Thunderstorm
96, 99	Thunderstorm + hail

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Presenting results to the user

• Short query ("what's the weather in Paris?"): run format=3, then restate in a natural sentence — "It's currently ⛅ 12°C in Paris."
• Forecast request ("3-day forecast for Tokyo"): use the ?T flag and display the text table directly — it's already nicely formatted.
• JSON / Open-Meteo: translate weathercode to plain language; don't dump raw JSON at the user.
• Fetch failure: if the city isn't found or the request times out, try an alternate spelling or ask the user to confirm the location.