jQuery(document).ready(function($) {
    $.ajax({
        url: "http://api.wunderground.com/api/65217d5ad3c1a1a8/forecast/q/53.36652,-2.29855.json",
        dataType: "jsonp",
        success: function(parsed_json) {
            var conditions = parsed_json.forecast;
            var date = parsed_json.date;
            alert("Current temperature in "+conditions+" is: " + date);
        }
    });
});