weather editor

//weather shamelessly stolen from Austin Kilduff
var json_url = "http://api.openweathermap.org/data/2.5/weather?q=NewYork,ny&appid=6e131a2916d5d45d8367b72a4675be0a";
var city;
var temp_curr;
var temp_low;
var temp_high;
var description;
var weatherCode;
var humidity;
$.when(
    $.getJSON(json_url)
    ).done( function(json_obj) {
        city = json_obj["name"];
        temp_curr = k_to_f(json_obj["main"]["temp"]);
        temp_low = k_to_f(json_obj["main"]["temp_min"]);
        temp_high = k_to_f(json_obj["main"]["temp_max"]);
        description = json_obj["weather"][0]["description"];
        weatherCode = Number(json_obj["weather"][0]["id"]);
        humidity = Number(json_obj["main"]["humidity"])
        insertWeatherInfo();
    }
);
function k_to_f(kelvin) {
    return ((9 / 5) * (kelvin - 273) + 32).toFixed(0);
}
function insertWeatherInfo() {
    //$("#city").append(city.toLowerCase());
    $("#description").append(description.toLowerCase());
    $("#temp_curr").prepend("it's " + temp_curr + "° out");
    $("#temp_low").append("lo " + temp_low + "° /");
    $("#temp_high").append("hi " + temp_high + "°");
    console.log("weather code: " + weatherCode);
    console.log("humidity: " + humidity);
    var disgusting = (weatherCode > 500 && weatherCode < 800);
    if (disgusting || Number(temp_low) < 30 || Number(temp_high) > 95
        || humidity > 75) {
        $("#badness").append("disgusting");
    } else {
        $("#badness").append("not bad");
    }
}


var monthNames = [
  "January", "February", "March",
  "April", "May", "June", "July",
  "August", "September", "October",
  "November", "December"
];
var days = ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];

var date = new Date();
var day = date.getDate();
var weekday = date.getDay();
var monthIndex = date.getMonth();
var year = date.getFullYear();

document.getElementById("date").innerHTML = days[weekday] + ", " + monthNames[monthIndex] + " " + day;