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JavaScript Node.js Basics (2014) Building a Command Line Application Perfecting: Getting Multiple Profiles

Daniel Nitu
Daniel Nitu
13,272 Points

Solution to command line weather app using openweathermap.org API

Hi guys, I want to share the weather app I made using openweathermap.org. Please let me know if there is anything I could improve. I used the city name instead of a zip code so you can type in any city name you like.

//Use openweathermap.org API to get weather forecast by city name
var http = require('http');

//Print out message
function printMessage(city, description, temperature, wind, clouds){
    var message = 'Currently, ' + city + ' has ' + description + 
            ', a temperature of ' + temperature + ' degrees Celsius' +
            ', a wind speed of ' + wind + 
            ' m/s and clouds covering ' + clouds + '% of the sky.';

//Print out error
function printError(error){

function getWeather(city){
    var key = 'your API key';
    var linkByCityName = 'http://api.openweathermap.org/data/2.5/weather?q=';

    //Connect to the API
    var request = http.get(linkByCityName + city + '&units=metric&APPID=' + key, function(response){
        var body = '';
        //Read data
        response.on('data', function(chunk){
            body += chunk;
        response.on('end', function(){
                    //Parse data
                    var weather = JSON.parse(body);
    request.on('error', printError);

var city = process.argv.slice(2);

Input looks like this: treehouse:~/workspace$ node weather bucharest

Output looks like this, but it can me modified to show a lot of other weather characteristics: Currently, Bucharest has clear sky, a temperature of 35.4 degrees Celsius, a wind speed of 2.1 m/s and clouds covering 0% of the sky.