Weather API Comparison 2026

// OpenWeatherMap - requires API key
const API_KEY = 'your_api_key';
const city = 'Berlin';

const res = await fetch(
  `https://api.openweathermap.org/data/2.5/weather?q=${city}&units=metric&appid=${API_KEY}`
);
const data = await res.json();

console.log(data.main.temp + 'C');
// "12.3C"
console.log(`Wind: ${data.wind.speed} m/s`);
console.log(`Humidity: ${data.main.humidity}%`);
console.log(`Conditions: ${data.weather[0].description}`);

// WeatherAPI - requires API key
const API_KEY = 'your_api_key';
const city = 'Berlin';

const res = await fetch(
  `https://api.weatherapi.com/v1/current.json?key=${API_KEY}&q=${city}&aqi=yes`
);
const data = await res.json();

console.log(data.current.temp_c + 'C');
// "12.3C"
console.log(`Wind: ${data.current.wind_kph} km/h`);
console.log(`Humidity: ${data.current.humidity}%`);
console.log(`UV Index: ${data.current.uv}`);

// Tomorrow.io - requires API key
const API_KEY = 'your_api_key';
const lat = 52.52;
const lon = 13.41;

const res = await fetch(
  `https://api.tomorrow.io/v4/weather/realtime?location=${lat},${lon}&apikey=${API_KEY}`
);
const data = await res.json();

console.log(data.data.values.temperature + 'C');
console.log(`Wind: ${data.data.values.windSpeed} m/s`);
console.log(`Humidity: ${data.data.values.humidity}%`);
console.log(`UV: ${data.data.values.uvIndex}`);

// Visual Crossing - requires API key
const API_KEY = 'your_api_key';
const city = 'Berlin';

const res = await fetch(
  `https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/${city}/today?unitGroup=metric&key=${API_KEY}&contentType=json`
);
const data = await res.json();

console.log(data.currentConditions.temp + 'C');
console.log(`Wind: ${data.currentConditions.windspeed} km/h`);
console.log(`Humidity: ${data.currentConditions.humidity}%`);
console.log(`Conditions: ${data.currentConditions.conditions}`);