Visual Crossing Weather API Libraries

Visual Crossing provides a wide array of open-source libraries that simplify the use of our Weather API in nearly every popular programming language. Whether you are a beginner writing your first script or a seasoned developer building enterprise systems, these libraries are designed to help you get started quickly and integrate weather data seamlessly into your applications.

Available Libraries

C#

Integrate weather data into any .NET, Windows Forms, or ASP.NET project with this object-oriented client.
View on GitHub

Example:

// create weather API object with API key
WeatherData weatherData = new WeatherData(“YOUR_API_KEY”);

// fetch weather data with location, from date, to date params.
weatherData.FetchWeatherData(“38.96%2C-96.02”, “2020-7-10”, “2020-7-12”, “us”, “events”, “”);

// daily weather data array list
List<WeatherDailyData> weatherDailyData = weatherData.WeatherDailyData;

if (weatherDailyData != null)
{
foreach (WeatherDailyData dailyData in weatherDailyData)
{
// print max temperature
Console.WriteLine($”{dailyData.Datetime}, {dailyData.TempMax}”);

// print min temperature
Console.WriteLine($”{dailyData.Datetime}, {dailyData.TempMin}”);

// print humidity
Console.WriteLine($”{dailyData.Datetime}, {dailyData.Humidity}”);
}
}

C++

A powerful native library for integrating Visual Crossing weather data in C++ environments.
View on GitHub

Example:

 // create weather API object with API key
 WeatherData weatherData("YOUR_API_KEY");

 // fetch weather data with location, from date, to date params.

 weatherData.fetchWeatherData("38.96%2C-96.02", "2020-7-10", "2020-7-12", "us", "events", "");

 //  daily weather data array list
 vector<WeatherDailyData> weatherDailyData = weatherData.getWeatherDailyData();

 for (WeatherDailyData dailyData : weatherDailyData) {
   tm date = dailyData.getDatetime();

   // Date convertion from tm object
   int y = date.tm_year + 1900;
   int m = date.tm_mon + 1;
   int d = date.tm_mday;

   // print max temperature
   cout << y << "-" << m << "-" << d << "," << dailyData.getTempMax() << endl;

   // print min temperature
   cout << y << "-" << m << "-" << d << "," << dailyData.getTempMin() << endl;

   // print humidity
   cout << y << "-" << m << "-" << d << "," << dailyData.getHumidity() << endl;
 }

Go

This Go client is ideal for efficient server-side weather integrations using the lightweight and fast Go environment.
View on GitHub

Example:

 weatherInstance, err := weather.NewWeather("https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline", "Your API Key")
 weather.FetchWeatherData("38.95,-95.664", "2024-01-01", '2024-01-12', include='hours')

 weather.PrintStruct(weatherInstance.GetWeatherData(), "")

Java

This client works seamlessly in enterprise apps, Spring Boot, or Android development where robust and full-featured weather data is needed.
View on GitHub

Example:

 // create weather API object with API key
 WeatherData weatherData = new WeatherData("YOUR_API_KEY");

 // fetch weather data with location, from date, to date params.

 weatherData.fetchWeatherData("38.96%2C-96.02","2020-7-10","2020-7-12","us","events","");

 // get daily weather data array list
 ArrayList<WeatherDailyData> weatherDailyData = weatherData.getWeatherDailyData();

 if (weatherDailyData != null) {
     for (WeatherDailyData dailyData : weatherDailyData) {
         // print max temperature
         System.out.println(dailyData.getDatetime() + "," + dailyData.getTempMax());

         // print min temperature
         System.out.println(dailyData.getDatetime() + "," + dailyData.getTempMin());

         // print humidity
         System.out.println(dailyData.getDatetime() + "," + dailyData.getHumidity());
     }          
 }

JavaScript

Call the Weather API using standard browser JavaScript and modern fetch() syntax.”.
View on GitHub

Example:

 weather = Weather('Your API Key')
 await weather.fetchWeatherData("38.95,-95.664", "2024-01-01", '2024-01-12', 'hours')

 weather.getDatetimeEpochAtDatetime('2024-01-02','01:00:00')
 weather.getTempAtDatetime('2024-01-02',1)
 weather.getPrecipAtDatetime(1,'01:00:00')
 print(">>Weather data at a datetime: ", weather.getDataAtDatetime(1,1, ['temp', 'precip', 'humidity']))

Kotlin

A modern API client for Android and other JVM platforms, built in pure Kotlin style.
View on GitHub

Example:

 // create weather API object with API key
 val weatherData = WeatherData("YOUR_API_KEY")


 // fetch weather data with location, from date, to date params.
 weatherData.fetchWeatherData("38.96%2C-96.02", "2020-7-10", "2020-7-12", "us", "events", "")


 // get daily weather data array list
 val weatherDailyData: ArrayList<WeatherDailyData>? = weatherData.weatherDailyData

 if (weatherDailyData != null) {
     for (dailyData in weatherDailyData) {
         // print max temperature
         println(dailyData.datetime.toString() + "," + dailyData.tempmax)

         // print min temperature
         println(dailyData.datetime.toString() + "," + dailyData.tempmin)

         // print humidity
         println(dailyData.datetime.toString() + "," + dailyData.humidity)              
     }
 }

MATLAB

Pull weather data directly into MATLAB for analysis, modeling, and visualization.
View on GitHub

Example:

 weather = Weather(api_key='Your API Key')
 weather.fetch_weather_data("38.95,-95.664", "2024-01-01", '2024-01-12', 'hours')

 weather.get_datetimeEpoch_at_datetime('2024-01-02','01:00:00')
 weather.get_temp_at_datetime('2024-01-02',1)
 weather.get_precip_at_datetime(1,'01:00:00')
 print(">>Weather data at a datetime: ", weather.get_data_at_datetime(1,1, {'temp', 'precip', 'humidity'}))

PHP

Use this lightweight script to integrate real-time or historical weather into web apps or reports.
View on GitHub

Example:

<?php
require 'vendor/autoload.php';

use WeatherVisual\WeatherData;

$apiKey = 'YOUR_API_KEY';
$weather = new WeatherData($apiKey);

try {
    $data = $weather->fetchWeatherData('Los Angeles, CA', '2024-01-01', '2024-01-07');
    print_r($data);
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}
?>

Perl

Efficient Perl client for data extraction, automation, or batch weather downloads.
View on GitHub

Python

One of our most popular libraries, perfect for scripting, data science, or Jupyter workflows.
View on GitHub

R

Seamlessly bring weather data into R for statistical modeling and time series analysis.
View on GitHub

Ruby

Add weather capabilities to Ruby scripts or Rails apps with this straightforward integration.
View on GitHub

Example:

require 'weather_visual'

api_key = 'YOUR_API_KEY_HERE'
weather = WeatherVisual::WeatherData.new(api_key)

location = 'New York, NY'
from_date = '2023-01-01'
to_date = '2023-01-07'
data = weather.fetch_weather_data(location, from_date, to_date, 'us', 'hours', ['temp', 'humidity'])

Rust

Take advantage of Rust’s speed and safety while integrating high-resolution weather data.
View on GitHub

Example:

  // Create weather API object with API key
   let mut weather_data = WeatherData::new("YOUR_API_KEY".to_string());

   // Fetch weather data with location, from date, to date params.
   weather_data.fetch_weather_data("38.96,-96.02", Some("2020-7-10"), Some("2020-7-12"), Some("us"), Some("events,hours"), Some("")).unwrap();

   // Daily weather data array list
   if let Some(weather_daily_data) = &weather_data.weather_daily_data() {
     for i in 0..weather_daily_data.len() {
         let datetime = daily_data.datetime().unwrap();
         println!("{:?}, {:?}", datetime, daily_data.temp_max().unwrap());
         println!("{:?}, {:?}", datetime, daily_data.temp_min().unwrap());
         println!("{:?}, {:?}", datetime, daily_data.humidity().unwrap());
     }
   }

Scala

Ideal for functional and reactive developers who want typed access to our weather data API.
View on GitHub

Example:

 // create weather API object with API key
 val weatherData = WeatherData("YOUR_API_KEY")

 // fetch weather data with location, from date, to date params.
 weatherData.fetchWeatherData("38.96%2C-96.02", "2020-7-10", "2020-7-12", "us", "events,hours", "")

 // get daily weather data array list
 val weatherDailyData: ArrayBuffer[WeatherDailyData] = weatherData.getWeatherDailyData

 if (weatherDailyData != null) {
   for (dailyData <- weatherDailyData) {
     // print max temperature
     println(s"${dailyData.datetime.get}, ${dailyData.tempmax.get}")

     // print min temperature
     println(s"${dailyData.datetime.get}, ${dailyData.tempmax.get}")

     // print humidity
     println(s"${dailyData.datetime.get}, ${dailyData.humidity.get}")
   }
 }

Swift

Add weather data to native iOS or macOS apps using Swift-native calls.
View on GitHub

Example:

 // Create weather API object with API key
 let weatherData = WeatherData(apiKey: "YOUR_API_KEY")

 // Fetch weather data with location, from date, to date params
 weatherData.fetchWeatherData(location: "38.96%2C-96.02", from: "2020-7-10", to: "2020-7-12", unitGroup: "us", include: "events", elements: "")

 // Daily weather data array list
 let weatherDailyData = weatherData._WeatherDailyData

 for dailyData in weatherDailyData {         
     
     // Hourly weather data array list
     let weatherHourlyData = dailyData._WeatherHourlyData
     for hourlyData in weatherHourlyData {
         // Print temperature
         print("\(hourlyData._Datetime ?? TimeInterval()), \(hourlyData._Temp ?? 0.0)")
         
         // Print humidity
         print("\(hourlyData._Datetime ?? TimeInterval()), \(hourlyData._Humidity ?? 0.0)")
     }
 }

VB (Visual Basic)

Access weather data using Visual Basic for legacy desktop and VBA integrations.
View on GitHub

Example:

 ' Create weather API object with API key
 Dim weatherData As New WeatherData("YOUR_API_KEY")

 ' Fetch weather data with location, from date, to date params.
 weatherData.FetchWeatherData("38.96%2C-96.02", "2020-7-10", "2020-7-12", "us", "events,hours", "")

 ' Daily weather data array list
 Dim weatherDailyData As List(Of WeatherDailyData) = weatherData.WeatherDailyData

 If weatherDailyData IsNot Nothing Then
     For Each dailyData As WeatherDailyData In weatherDailyData
         ' Print max temperature
         Console.WriteLine($"{dailyData.Datetime}, {dailyData.TempMax}")

         ' Print min temperature
         Console.WriteLine($"{dailyData.Datetime}, {dailyData.TempMin}")

         ' Print humidity
         Console.WriteLine($"{dailyData.Datetime}, {dailyData.Humidity}")              
     Next
 End If

Want to Contribute?

Have a favorite language that’s not yet listed? Created your own library or plugin? We’d love to feature it!

Visual Crossing is a community-driven platform, and we welcome your help in expanding our library ecosystem.

If you’ve built a new client, improved an existing one, or want to share a cool integration, reach out to our Support Team, and we’ll help you publish the library and include it on this page.

Every contribution helps make weather data more accessible to developers everywhere and improves the usefulness of the weather data platform that you have come to reply upon.