/// <summary>
/// Execute Http request to fetch weather data asynchronously
/// </summary>
/// <param name="cityName"></param>
public async void GetWeather(string cityName)
{
var data = await service.GetForecastAsync(cityName);
today = data.First();
var localTime = DateTime.Now.Add(TimeSpan.FromSeconds(today.UTCOffsetInSecs));
// Tomorrow
tomorrow = new WeatherForecast();
forecastData = data.Where(i => i.Date.Day == localTime.Date.AddDays(1).Day).ToList();
Tuple <int, int> tuple = ProcessData(forecastData, out tomorrow);
tomorrow.MinTemperature = tuple.Item1;
tomorrow.MaxTemperature = tuple.Item2;
forecastData.Clear();
// AfterTomorrow
afterTomorrow = new WeatherForecast();
forecastData = data.Where(i => i.Date.Day == localTime.Date.AddDays(2).Day).ToList();
tuple = ProcessData(forecastData, out afterTomorrow);
afterTomorrow.MinTemperature = tuple.Item1;
afterTomorrow.MaxTemperature = tuple.Item2;
forecastData.Clear();
// AfterTomorrow + 1 Day
forecastData = data.Where(i => i.Date.Day == localTime.Date.AddDays(3).Day).ToList();
fourth = new WeatherForecast();
tuple = ProcessData(forecastData, out fourth);
fourth.MinTemperature = tuple.Item1;
fourth.MaxTemperature = tuple.Item2;
// AfterTomorrow + 2 Days
forecastData = data.Where(i => i.Date.Day == localTime.Date.AddDays(4).Day).ToList();
fifth = new WeatherForecast();
tuple = ProcessData(forecastData, out fifth);
fifth.MinTemperature = tuple.Item1;
fifth.MaxTemperature = tuple.Item2;
UpdateUIElements();
}