Open-Meteo
Hourly forecasts for any coordinate — no key, no signup.
Open-Meteo serves fast global weather forecasts assembled from national weather services. The free endpoint needs no API key, answers over HTTPS with permissive CORS, and covers hourly and daily variables, historical reanalysis and air quality. Note the license: the free tier is for non-commercial use — a paid keyed tier exists for products.
GET https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t=temperature_2m,wind_speed_10m
{
"latitude": 52.52,
"longitude": 13.41,
"elevation": 38,
"current": {
"time": "2026-07-04T02:15",
"temperature_2m": 17.3,
"wind_speed_10m": 9.4
},
"current_units": {
"temperature_2m": "°C",
"wind_speed_10m": "km/h"
}
}curl "https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t=temperature_2m,wind_speed_10m"const res = await fetch("https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t=temperature_2m,wind_speed_10m");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t=temperature_2m,wind_speed_10m")
print(res.json())/forecast?latitude=52.52&longitude=13.41¤t=temperature_2m,wind_speed_10mPROBEDHourly and daily forecasts for any coordinate — the primary weather call.
/forecast?latitude=52.52&longitude=13.41&hourly=temperature_2m,precipitationHourly variables — temperature, humidity, wind, precipitation.
/air-quality?latitude=52.52&longitude=13.41¤t=us_aqi,pm2_5Current air-quality index and pollutant concentrations.
/elevation?latitude=52.52&longitude=13.41Terrain elevation in meters for a coordinate.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
Open-Meteo: common questions
Is Open-Meteo free to use?
Yes — Open-Meteo is a free weather API. Free tier: <10,000 calls/day, no signup. The free tier is for non-commercial use.
Does Open-Meteo need an API key?
No — Open-Meteo needs no API key or signup. You can call it straight away; rate limits still apply (600/min · 5,000/hour).
Can I call Open-Meteo from the browser?
Yes — Open-Meteo returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is Open-Meteo up right now?
As of our last scheduled check, Open-Meteo is healthy. We re-probe it every sweep — the status badge and uptime chart above always show the latest.