Weather API: current weather and 48-hour forecast by city
Current weather by city name, or by latitude and longitude, for any place on Earth: temperature in Celsius, conditions (clear, cloudy, rain, snow), precipitation in mm, wind, humidity, cloud cover and air pressure, plus an hourly forecast for up to 48 hours. Data from the Norwegian Meteorological Institute; city names resolve via Wikidata. Use for travel and event planning, logistics, agriculture and any agent that needs the weather.
When to use it
- Get the current temperature, conditions, wind and humidity for a city or coordinates
- Plan travel, events or logistics with an hourly forecast up to 48 hours
- Give an AI agent the weather without a provider account
Guide: Weather forecast API
Inputs
| Name | Type | Description |
|---|---|---|
city | string | City or place name, e.g. London or Lisbon (used when lat and lon are not given; with no place at all the answer is for London) |
lat | number | Latitude in decimal degrees, -90 to 90 (with lon, instead of city) |
lon | number | Longitude in decimal degrees, -180 to 180 (with lat, instead of city) |
hours | integer | Hours of hourly forecast to return, 1-48 (default 12; 48 covers tomorrow) |
Request
Over HTTP, with a card key from /credits:
curl -H "Authorization: Bearer adt_…" "https://glyphcall.com/weather?city=London"Or one of your 3 free calls, no key:
curl "https://glyphcall.com/weather?city=London&trial=1"Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.
Live result
The real answer to the request above, read 2026-11-15 18:48 UTC and refreshed every 15 minutes.
{
"place": "London",
"latitude": 51.5074,
"longitude": -0.1278,
"elevationM": 8,
"current": {
"time": "2026-11-15T18:00:00Z",
"temperatureC": 8.3,
"conditions": "fair_night",
"precipitationMm": 0,
"windSpeedMs": 4.1,
"windFromDegrees": 225.2,
"humidityPercent": 94.5,
"cloudCoverPercent": 34.4,
"pressureHpa": 994.9
},
"forecast": [
{
"time": "2026-11-15T19:00:00Z",
"temperatureC": 8,
"conditions": "partlycloudy_night",
"precipitationMm": 0,
"windSpeedMs": 4,
"windFromDegrees": 231.6,
"humidityPercent": 94.4,
"cloudCoverPercent": 80.5,
"pressureHpa": 995.1
},
{
"time": "2026-11-15T20:00:00Z",
"temperatureC": 7.9,
"conditions": "rain",
"precipitationMm": 0.5,
"windSpeedMs": 4,
"windFromDegrees": 252.1,
"humidityPercent": 95.2,
"cloudCoverPercent": 100,
"pressureHpa": 995.8
},
{
"time": "2026-11-15T21:00:00Z",
"temperatureC": 7.8,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 4.2,
"windFromDegrees": 269.2,
"humidityPercent": 96.6,
"cloudCoverPercent": 100,
"pressureHpa": 996.5
},
{
"time": "2026-11-15T22:00:00Z",
"temperatureC": 7.4,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 4.2,
"windFromDegrees": 288.5,
"humidityPercent": 96.5,
"cloudCoverPercent": 96.9,
"pressureHpa": 997.3
},
{
"time": "2026-11-15T23:00:00Z",
"temperatureC": 7,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 3.9,
"windFromDegrees": 284.2,
"humidityPercent": 96.1,
"cloudCoverPercent": 100,
"pressureHpa": 997.9
},
{
"time": "2026-11-16T00:00:00Z",
"temperatureC": 6.7,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 4.5,
"windFromDegrees": 281.2,
"humidityPercent": 94.9,
"cloudCoverPercent": 99.2,
"pressureHpa": 999
},
{
"time": "2026-11-16T01:00:00Z",
"temperatureC": 6.6,
"conditions": "partlycloudy_night",
"precipitationMm": 0,
"windSpeedMs": 4.8,
"windFromDegrees": 286.3,
"humidityPercent": 93.4,
"cloudCoverPercent": 71.9,
"pressureHpa": 1000.1
},
{
"time": "2026-11-16T02:00:00Z",
"temperatureC": 6.2,
"conditions": "partlycloudy_night",
"precipitationMm": 0,
"windSpeedMs": 4.7,
"windFromDegrees": 284.5,
"humidityPercent": 90.7,
"cloudCoverPercent": 60.2,
"pressureHpa": 1001.2
},
{
"time": "2026-11-16T03:00:00Z",
"temperatureC": 5.9,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 4.9,
"windFromDegrees": 280.7,
"humidityPercent": 89.9,
"cloudCoverPercent": 100,
"pressureHpa": 1002.3
},
{
"time": "2026-11-16T04:00:00Z",
"temperatureC": 6,
"conditions": "cloudy",
"precipitationMm": 0,
"windSpeedMs": 4.9,
"windFromDegrees": 283.9,
"humidityPercent": 88.2,
"cloudCoverPercent": 100,
"pressureHpa": 1003
},
{
"time": "2026-11-16T05:00:00Z",
"temperatureC": 5.7,
"conditions": "partlycloudy_night",
"precipitationMm": 0,
"windSpeedMs": 4.6,
"windFromDegrees": 290.4,
"humidityPercent": 86.8,
"cloudCoverPercent": 51.6,
"pressureHpa": 1003.9
},
{
"time": "2026-11-16T06:00:00Z",
"temperatureC": 4.8,
"conditions": "clearsky_night",
"precipitationMm": 0,
"windSpeedMs": 4.4,
"windFromDegrees": 281.5,
"humidityPercent": 85.8,
"cloudCoverPercent": 7,
"pressureHpa": 1005.1
}
],
"forecastUpdatedAt": "2026-11-15T17:19:15Z",
"source": "MET Norway (api.met.no), licensed CC BY 4.0",
"checkedAt": "2026-11-15T18:48:07.452Z"
}From an AI agent (MCP)
Add the MCP server to Claude, Cursor or any MCP client. This tool is weather, and the first 25 successful calls are free:
https://glyphcall.com/mcpQuestions
Where does the forecast come from?
The Norwegian Meteorological Institute (MET Norway); city names resolve via Wikidata.
Can I use coordinates instead of a city?
Yes, pass lat and lon instead of city.
How do I pay?
Each successful call costs $0.002; failed calls are not charged. The first 3 calls are free (25 through an MCP client). Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.