RestService.cs

using Newtonsoft.Json;
using System.Diagnostics;

namespace MauiWeatherForecast;

public class RestService
{
    HttpClient _client;

    public RestService()
    {
        _client = new HttpClient();
    }

    public async Task<WeatherData> GetWeatherData(string query)
    {
        WeatherData weatherData = null;

        try
        {
            var response = await _client.GetAsync(query);
            if (response.IsSuccessStatusCode)
            {
                var content = await response.Content.ReadAsStringAsync();
                weatherData = JsonConvert.DeserializeObject<WeatherData>(content);
            }
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
            throw;
        }
        return weatherData;
    }
}