M
API Matrix

How to Choose the Best Weather API in 2026

There are 31 Weather APIs in our directory. Of these, 10 require no authentication, making them ideal for quick prototyping. 13 are rated beginner-friendly.

Last updated: April 2026

Quick Comparison: Top 10 Weather APIs

Name Auth HTTPS CORS Difficulty
Weatherstack API Key ✓ ? Intermediate
7Timer! No Auth ✗ ? Beginner
AccuWeather API Key ✓ ? Intermediate
Aemet API Key ✓ ? Intermediate
APIXU API Key ✓ ? Intermediate
AQICN API Key ✓ ? Intermediate
AviationWeather No Auth ✓ ? Beginner
ColorfulClouds API Key ✓ ✓ Intermediate
Euskalmet API Key ✓ ? Intermediate
Foreca OAuth ✓ ? Advanced
See all 31 Weather APIs compared side by side →

Free Weather APIs (No Auth)

These APIs require no API key or signup. Start using them immediately.

7Timer!

⭐ Beginner's Pick
72

7Timer!

No Auth Beginner 192ms

AviationWeather

87

AviationWeather.gov is a free NOAA service that provides official aviation weather data including METARs, TAFs, PIREPs, and SIGMETs used by pilots and flight planners.

No Auth Beginner HTTPS 36ms

Hong Kong Obervatory

⭐ Beginner's Pick
72

The Hong Kong Observatory Open Data API provides free access to weather observations, forecasts, earthquake reports, and climate data for Hong Kong and the surrounding region.

No Auth Beginner HTTPS 99ms

MetaWeather

0

MetaWeather provides programmatic access to weather via REST API.

No Auth Beginner HTTPS 337ms

ODWeather

⭐ Beginner's Pick
62

ODWeather is a free weather and webcam API from OceanDrivers that provides real-time marine and coastal weather data including wind, waves, and temperature.

No Auth Beginner 366ms

Open-Meteo

⭐ Beginner's Pick
72

Open-Meteo is a completely free and open-source weather API for non-commercial use that provides hourly and daily forecasts, historical data, and climate projections for any location worldwide without requiring an API key.

No Auth Beginner HTTPS 275ms
View all free Weather APIs →

Try It in 5 Minutes: 7Timer!

Quick implementation example using 7Timer!.

Using curl

curl http://www.7timer.info/doc.php?lang=en

JavaScript

const url = "http://www.7timer.info/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

New to APIs? Read our Getting Started Guide →

Frequently Asked Questions

How many Weather APIs are available?

There are 31 Weather APIs in our directory as of 2026.

Are there free Weather APIs?

Yes, 10 Weather APIs require no authentication and are completely free to use.

What is the easiest Weather API to use?

7Timer! is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.

Do I need an API key for Weather APIs?

It depends. 10 APIs need no authentication, 19 require an API key, and 1 use OAuth.

Explore Weather APIs

Browse All APIs → Side by Side →