OpenMeteoApi.NET

Code Example

OpenMeteoApi.NET Console Application Code

    /*
     * In this code example, I will use OpenMeteoAPI.NET to build a basic console application that does the following:
     * 
     * 1) Retrieves the latest 2-meter temperature ECMWF IFS & GFS forecast for a given latitude and longitude.
     *  
     */
    using OpenMeteoApiNet.ECMWF_IFS;
    using OpenMeteoApiNet.GFS;
    
    
    // Our main program namespace
    namespace Program
    { 
        class Program
        {
            // Our main task in our application
            public static async Task Main(string[] args)
            {
                // Continuous loop until the user manually exits the command prompt. 
                while (true)
                {
                    // Prompt the user for latitude and longitude
    
                    Console.WriteLine($"Enter a latitude");
                    var latitude = Console.ReadLine();
                    Console.WriteLine($"Enter a longitude");
                    var longitude = Console.ReadLine();
    
                    // Selects the variable temperature_2m
                    string[] variables = new string[] { "temperature_2m" };
    
    
                    // Retrieve the ECMWF IFS forecast for 1 day
                    var ecmwfData = await ifsHourlyForecastApi.GetPointForecast(latitude, 
                        longitude,
                        variables: variables,
                        days:1);
    
                    // Retrieve the GFS IFS forecast for 1 day
                    var gfsData = await gfsHourlyForecastApi.GetPointForecast(latitude,
                        longitude,
                        variables: variables,
                        days:1);
    
                    // Prints a no data message if the API returns null.
                    if (ecmwfData == null)
                    {
                        Console.WriteLine("No ECMWF IFS data returned from the API.");
                        continue;
                    }
    
                    if (gfsData == null)
                    {
                        Console.WriteLine("No GFS data returned from the API.");
                        continue;
                    }
    
                    // Prints the ECMWF IFS & GFS Forecast to the console
                    for (int i = 0; i < (ecmwfData.time?.Length ?? 0); i++)
                    { 
                        var ecmwfTime = ecmwfData.time?[i] ?? "N/A";
                        var ecmwfTemp2m = ecmwfData.temperature_2m?[i].ToString() ?? "N/A";
                        var gfsTemp2m = gfsData.temperature_2m?[i].ToString() ?? "N/A";
    
                        // Rounds to the nearest whole number and converts from double to integer.
                        int ecmwfTemp2mInt = (int)Math.Round(ecmwfData.temperature_2m?[i] ?? 0);
                        int gfsTemp2mInt = (int)Math.Round(gfsData.temperature_2m?[i] ?? 0);
    
                        // Rounds to the nearest whole number and converts from double to integer
                        Console.WriteLine($"Time: {ecmwfTime}, ECMWF IFS: {ecmwfTemp2mInt}°F, GFS: {gfsTemp2mInt}°F");
                    }
                }
            }
        }
    }

OpenMeteoApi.NET Console Application Output