Weather App Current Time

According to https://developer.forecast.io/docs/v2#forecast_call the API will return the current time at the location for which you requested the weather information. I have changed the coordinates to my position and it does correctly return the local time.

Under normal circumstances, the user is in the same timezone as the location for which he is requesting the current weather. If this is not the case and you know the difference in hours between the users current timezone and the timezone of the weather location, you could just add/subtract it before formatting the time string, e.g.

 func dateStringFromUnixtime(unixTime: Int) -> String {
       // adding one hour to the local time because of different timezone
        let localTime = unixTime + 3600
        let timeInSeconds = NSTimeInterval(localTime)
        let weatherDate = NSDate(timeIntervalSince1970: timeInSeconds)

I guess you could also get the local time zone of the user programmatically, compare it to the "timezone" element returned by the forecast.io API and then calculate the time difference. NSTimezone looks like a good starting point (see docs), but I haven't tried this myself so unfortunately cannot give you a solution out of the box for this approach